133. In which of the following the output is 1. If A = 1 and B = 1.
134. A body moving with a velocity (0.29)1/2C observes the time of an event ....... where proper time is 1.8 Sec.
139. Which material would provide best shielding for Coulomb's Force ?
140. In alternating current, inductor behave like ;
141. Reverse process of vector addition ?
142. When a ball moves from and reaches to its maximum heigth in 3 seconds, what is its initial velocity ?
143. Rocket propulsion is according to ?
144. 1 cal = ......... J
145. If the radius of circle is doubled, then centripetal force becomes ;
146.If a body 2 Kg moves vertically 2m then work done is ;
147. Bernoulli equation is according to ..... Law. ;
148. The time period of second pendulum from its extreme to mean position. ;
151. If the distance is doubled b/w two charges, then coulombs force becomes ;
152. Two resistors of 6Ω each are in parallel and thord of 3Ω is connected in series ;
153. If a magnet in a non-uniform magnetic field, it will experience ;
155.The force F experienced by a conductir of length L carrying current when placed in a uniform magnetic field B is given by the relation ;
156. High Voltage is obtained from ; (ANS ; ............................. )
157. Unit of longitudinal strain is ;
158. A completely filld band is called ;
159. Which of thr following is used for detection of light ;
160. If intensity and frequency of light is doubled, then emission of electrons is ;
161. In diode, the graph is drawn between ...... ??
162. V = rw (ANS : ......................)
163. Force F is required to be applied on a body of 1 kg placed on inclined plane at an angle of 30° to move it. The force is : A)g B) g 3 C) g/3 D) g/2
164. A ball strikes another ball mass 2kg and 1kg at rest with a velocity 30ms - 1. If after the collision the velocities are 20 and 15ms - 1 , then (it undergo Elastic collision)
165. Two satellites S1 and S2 are with radius from the Centre of earth of 80,000 and 40,000 then their orbital velocity V1 and V2 are : A)2 V1 = V2 B) 2 V2 = V1 C) V1 = V2 D) None
166. A body takes a pendulum in the lift and it accelerates upwards the tension in the string : A)increases B) decreases C) first increases then decreases D) decreases then increases
167. The pressure in a pipe of varying cross sectional area, the pressure at smallest radius portion of it : A)min B)max C)Constant D)None
168. A car approaches C1 to another car C2 with a velocity of ....... If the apparent frequency of C1 , when it horns, for C2 is ....... The real frequency is? (ANS ; ____________________________)
169. In astronomical telescope the final image is formed at : A)near point B) infinity C)far time D)None
170. A gas is enclosed in a container fitted with a piston of cross-sectional area of 0.03m2 and pressure is maintained at 1000Nm - 2. When heat is slowly transferred, the piston is pushed up through a distance(d) of 4cm. And 100J heat is transferred to the system then find ∆U?
171. In Carnot engine the gas is expanded ...................... ??
172. A charge of 100mC passes through a potential difference of 100V of mass 0.1mg , then what is change in velocity?
173. When a 500Ω resistance is replaced by 100Ω in a cell, effect on terminal velocity?
174. Current passing through two wires in same direction : A)repel B) attract C)No effect D)None of these
175.A particle passes through the solenoid along the axis, then it will pass along the path ....... ; A)parallel to axis B)along spiral path C)etc (ANS ; ____________________ )
176.In RC circuit _____ leads the _______
177.If a bulb and capacitors are connected in series, the current passing is AC, then then bulb will ..... ; A)glow B)fused C)nothing happens D)None
178.Transistor is used as ................ ; (switch---right answer)
179.If inputs are different then for NAND gate, the output is? (ANS ; _____________________ )
180.A boy named Amir sees a scale placed on earth while he is in aero plane. Then the length of scale will ................; A)increased B)decreased C)same D)None
181.If the speed of body is increased, the mass of body will : A)increase B)decrease C)Constant D)None
182.As the temperature increases , no of longer wavelength radiation : A)increases B)decreases C)Both A & B D)None
183.When photo electrons are emitted from metal surface then what would be greater than threshold? A)intensity B)frequency C)both D)None
184.Davison and Germer experiment proves : A)wave nature of electron B)particle nature of electron C)both D)None
185.Laser will produce if the atoms in lower energy states are _______ than those in higher energy states. : A)greater B)less C)equal D)All
186.A flexible loop of wire is lying such that field of lines are parallel to area. If area begins to change then emf induced is : A)max B) zero C)both D)None
187.In FM , the amplitude of carrier wave is : A)diminished B)increased C)both D)None
188. e/m value of electron is : A)constant B)variable C)strong D)none
189.The ratio of gravitational mass to inertial mass is : A)1:1 B)2:1 C)1:2 D)3:1
190.In RLC series circuit, the current at resonance frequency is : A)Min B)Max C)Zero D)None
191.The indicator may store energy in its ; A)Coil B)Magnetic field C)Electric field D)both B & C
192.A force of 9N act perpendicular to force of 16 N resultant will be? A)33 B)14 C)18 D)25
193. If Thermistor Is Placed In Oven If Temp Of oven Is Increased Then The A) R Increses B) R Decreses C) R is Same D) None
194. A Body is accelerating downward with 9.8m/s2. If we throw it with some force, then acceleration will be: A) More than 9.8 B) Less than 9.8 C) Equal D) None
195. To Increase Charging of Capacitor A) Resistance Decrease B) Capacitance Increases C) Fixed Capacitance D) None of above
196. The Angular Frequency Of A Pendulum Is 1 Rad/sec Its Length Will Be : A) 24 m B) 9.8 m C) 98 m D)None
197. The Table Represents
A) And B) Nand C) OR D) Both A & C
198. If 1 micro coulumb charge is pass through wire in 1 micro second then current will be : A) 1 A B) 1 Micro Ampere C) 1 Micro Volt D) None
199. Orbital speed of stallites going around the earth increased if the distance from earth is...... A)Increased B) Decreased C) Remain same D)None
200. A helicopter is ascending vertically at the rate of 19.6 m/s when it is at a height of 156.8m above the ground. How long the stone takes to reach the ground : A)8 Sec B)4 Sec C)2 Sec D)6 Sec
201. Tesla is a unit of magnetic field is equal to ....? A) Nm/A B) NmA C)N/mA D)None
202. voltage-current graph of non ohmic device is ...... ; A) Is not straight line B) straight line C) parabola D)None
203.Amp-meter is a galvanometer with a : A) High resistance connected in parallel B) Low resistance connected in parallel C) High resistance connected in series D) Low resistance connected in series
204. A body of 100 Kg mass and 100m radius and 36m/s speed has centripetal force : A) 100N B) 50N C) 70N D) 33N
205. If power of body is 10 J/s then energy of body is : A)100 J B)10 J C)1000 J D)50 J
206. A train travelling and sound of whistle has frequency 5270 Hz. The frequency of sound heard by the driver was : A)5270 Hz B) more than 5270 Hz C) less than 5270 Hz D)None
207. The direction of induced current is always so as to oppose the change which causes to produce current : A) Lenz Law B) Farady Law C)Newton Law D)None
208. Milkians method is used to determine ???? : A) e/m of electron B) Charge On Electron C) Mass Of Electron D)None
209. If three resistances r connected in parallel thier eqivqlent resistance is : A) R/3Ω B) 9R C) 3R D)R
210. If three resistances r connected in series Then Thier Eqivalent resistance is : A)3R B) 9R C) R/9 D) 3/R
211. Voltmeter is a device which has : A) High internal resistance B) low internal resistance C)No internal Resistance D)Negligible Resistance
212. A 500 Kg rocket travels in deep space at a constant speed of 3000m/sec. The power being produced by the rocket engine at this time is : A)1500KW B)6KW C)0.16KW D)None of these
213. A shell is fired at an angle of 45° above ground with an initial velocity of 100m/Sec. It will hit the ground, assuming " g= 10m/sec2 ", after about : A)7 Sec B)10 Sec C)14 Sec D)20 Sec
214. Find the average speed of a car whose velocity-time graph is shown in the figure : A)10m/Sec B)15m/Sec C)17.5m/Sec D)20m/Sec
215. A girl stands on a weighing scale placed in a stationary lift (elevator). The scale reads 30 Kg. The lift is then activated to move from ground floor to 10th floor. As the lift moves from its stationary position on the ground floor until it comes to rest on the 10th floor, the scale reading will :
A)Remain Constant B)First decrease, become constant for some time, and then increase C)First increase, become constant for some time, and then increase D)First increase, become constant for some time, and then decrease
216. A 1000 Kg truck pulls a 500 Kg car by means of a rope with a speed of 10 m/Sec. The rope suddenly breaks causing the truck to move forward with a speed of 13 m/Sec. Find the speed of the car after the rope breaks. A)13 m/Sec in the same direction B)4 m/Sec in the opposite direction as that of the truck C)ZERO m/Sec D)4 m/Sec in the same direction as that of the truck
217. In an inelastic collision between two bodies, the following is conserved: A)Kinetic energy only B)Momentum only C)Kinetic energy and momentum D)Total energy and momentum
218. As the water falls from a tap, its cross sectional area should decrease according to : A)Bernoulli's equation B)Continuity equation C)Venturi relation D)None of these
219. A 100 KG satellite orbiting 400 Km above earth has an orbital speed of v Km/hour. A 200 KG satellite with the same orbit radius will require an orbital speed : A)v Km/Hr B)2v Km/Hr C)v/2 Km/Hr D)2 Km/Hr
220. The phenomenon of interference occurs in : A)Sound waves only B)Visible Light only C)All types of waves D)Radio waves only
221. The density of oxygen is about 16 times that of hydrogen. Therefore, if speed of sound in oxygen is x, its speed i hydrogen will be : A)Greater than x B)Less than x C)The same D)Depending upon the pressure of gases
222. A police motor cycle running at 130 Km/hr sounds a siren of 2KHz frequency while chasing a car running at 150 Km/hr. The apparent frequency of the siren heard by the car driver will be : A)Greater than 2 KHz B)2 KHz C)The siren will not be heard by the car driver D)Less than 2 KHz
223.Young's double slit experiment is used to study interference of : A)Microwaves B)Radio Waves C)Sound Waves D)Visible Light
224. You have 10 resistors available, each of 20 KΩ. You need to form a 2.5 KΩ resistor for your circuit using the available resistors. You can connect : A)Eight 20 KΩ in series B)Eight 20 KΩ in parallel C)Four 20 KΩ in parallel D)None of the above
225. You have 15 capacitors available,each of 15 nanoF. You need a capacitance of around 150 nanoF in a circuit. You can achieve this value by connecting : A)10 in Series B)12 in Series C)10 in Parallel D)8 in Parallel
226. Current through a 2 mH inductor is l(r) = 2Sin 100r Amps. The voltage across the inductor will be : A)400mV B)400cos 100r mV C)4cos 100r mV D)4Sin 100r mV
227. The following device does not use electromagnetic waves for its operation : A)Ultra-sound Machine B)Radar C)X-Ray Machine D)Mobile phone
228. A transistor CANNOT be used as a : A)Switch B)Amplifier C)Power Source D)Inverter
229. A 1000 KG truck carrying a load of 500 KG travels on a mountain road for 5 minutes at constant speed. Its power output is 2500 Watts. Assuming " g = 10 m/Sec2 ". It will achieve a vertical height of : A)75m B)50m C)1.2m D)100m
230. A thermistor with positive temperature cofficient is used to measure temperature in an oven. When temperature of the oven increases, the resistance value of the thermistor : A)Decreases B)Increases C)Remains Unchanged D)None of above
231. When a metal surface is exposed in light, it may emit electrons. The maximum energy of these electrons depends on : A)Intensity of light B)Area of metal surface C)Wavelength of light D)All of the above
232.The truth table shown in fogure is implemented by :
A)NOR gate B)AND gate C)OR gate D)XOR gate
233. Reception of a particular radio station is selected by turning knob of a radio. Turning the tuning knob changes the : A)Inductance B)Capacitance C)Resistance D)None of the above
234. AC voltage is fed into a single diode rectifier. The output of the rectifier is : A) Full wave rectified DC Voltage B) Half wave rectified DC Voltage C)Doubled frequency AC Voltage D) None of Above
235. In frequency modulation , the amplitude of the carrier waves remains the same but its frequency changes in proportion to : A) The amplitude of the modulationg signal B) The sign of the modulating signal C) The frequency of the modulating signal D) All of the above
236. An A.C. generator produces alternating voltage of X Volts rms. The peak value of this alternating voltage is : A)1.414X Volts B)X/2 Volts C)X/2 Volts D)X2/2 Volts
237 A transformer has 100 turns on the input side and 500 turns on the output side. If the rms values of the input voltage and current are 220 V and 2 A respectively, then the output power is about : A)480 Watts B)1440 Watts C)440 Watts D)90 Watts
238. According to Heisenberg's uncertainty principle, for any given particle it is not possible to accurately measure : A)Both position and momentum B)Its position C)Its momentum D)Its velocity
239. One of the environment friendly means of generating electric power is from Bio-gas. Bio-gas is : A)Available naturally in oil reserves B)Not a gas C)Available in rivers D)Produced from catle waste
240.You have 20 inductors available each of 15H. You need an inductor of 1H in a circuit. You achieve it by combination? A) 15 inductor in parallel B) 20 inductors in series C) 15 inductors in series D) 20 inductors in parallel
241.A themistor with negative temperature coefficient is placed in a furnance. When temperature of furnance increases the resistance? A)decrease B)Increase C)Remain same D) No effect
242. In frequency modulation,the amplitude of carrier waves remain same but its frequency changes propotional to? A)The amplitude of modulating signals B)The sign of modulating signals C)The frequency of modulating signals D)All of these
243.When you drop a ball it accelerate at 9.8m/Sec. If you instead throw it downward then it accelerate immediately after leaving your hand assuming no air resistance ??? : A)9.8 B)more than 9.8 C)less than 9.8 D)None
244.In an inelastic collision between two bodies, following is reserved? : A)Energy B)Momentum C)Both a and b D)None
245.As the water falls from the tap,the cross-sectional area should decrease according to ? A)Equation of continuity B)Bernoulli's equation C)Venturi relation D)None
246. If two NOT gates in parallel is attached to a NAND gate in series, the gate formed is? A)NOR B)NAND C)OR D)XOR
247. In circuit X, L=100mH and C=100µF are attached in series. In circuit Y, L=100mH and C=10µF are attached in parallel. The resonating frequency Fx and Fy are related as? A) Fx = Fy B)Fx = 10Fy C)Fx =0.01 Fy D)Cannot be determined
248.A transformer has 100 turns on the input side 500 turns on the output side. If rms value of input voltage are 220V and 5A respectively. The output power is? : A)500Watt B)1100Watt C)1440Watt D)50Watt
249.A truck of mass 5000Kg and a car of mass 1000Kg are both travelling at a speed of 36Km/hr. Assume the time required to stop the truck in 10 sec is X newton and the force required to stop the car in 10 sec is Y newton. The difference X and Y is equal to? A)4Mega Newton B)4Kilo Newton C)14.4Kilo Newton D)14.4Mega Newton
250.A tight wire is clamped at two points 2m apart. It is plucked near one end, What are the three longest wavelengths produced on the vibrating wire? A)2m,1m,0.67m B)4m,2m,1.33m C)4m,2m,1m D)1m,0.5m,0.33m
251.When using optical fibre in data transmission, the angle of incidence of the light source on the glass fibre should be? : A) Less than critical angle B) Greater than critical angle C) Less than angle of refraction D) Greater than angle of refraction
252.Consider two spheres A and B or radii ra and rb both concentric with point charge Q. If ra greater than rb then the total flux passing normally through the sphere A and B is related as ? A)Flux through A is greater B)Flux through both sphere is equal C)Flux through A may be greater or less than Q depending on radius D)Flux through sphere B is greater
253.A mixture of two gases at constant temperature contain molecules of two kinds. The first kind of mass and rms speed and the second molecule has mass and rms speed . The ratio is C1/C2? A)m1/m2 B)m2/m1 C)[m1/m2]1/2 D)[m2/m1]1/2
254. A thermistor with negative temperature co-efficient is placed in a furnance. When temperature of furnance increases the resistance ? A)Decreases B)Increases C)Remain Same D)No effect
255. AC voltage is passed through single diode rectifier, the output of the bridge rectifier is ? A)Full wave DC B)Half wave DC C)Double frequency DC D)None
A)OR B)XOR C)XNOR D)Both OR & XNOR
A)2 Sec B)2.07 Sec C)1.67 sec D)1.72 Sec
135. A proton is assumed to be made of ...... quarks.
A)Two up & One Down B)One up & two Down C)Three down D)three up
136. When the frequency of oscillator is slightly greater than that of resonance, amplitude of oscillation ;
A)Rapidly Increases B)Rapidly Decreases C)remains Constant D)None
137. Semi-Conductor behaves as ....... at 0K. ;
A)Insulators B)Superconductors C)Pure Conductor D)None
138. The value of permittivity of free space is 8.85x10 - 12 .
A)C2N-1m-1 B)NC-2m-1 C)C2N-2m-1 D)NC-2m-2
139. Which material would provide best shielding for Coulomb's Force ?
A)Mica B)Benzene C)Glass D)Water
A)Battery B)Resistor C)Conductor D)Current Source
A)Subtraction B)Multiplication C)Division D)None
A)40m/Sec B)29.4m/Sec C)35m/Sec D)25m/Sec
A)3rd law of motion B)1st C)2nd D)none
A)418 B)400 C)10 D)4.18
A)Doubled B)Half C)Remains Same D)Reduces four times
A)39.2 J B)20 J C)45 J D)35 J
A)Stock's Law B)Newton's Law C)Einstien's Equation D)None
A)T B)T/2 C)T/4 D)2T
149. At what temp. the velocity of sound is doubled than as that of at 10C . ;
(ANS ;...........................)
150. When the wave no. of light is 5x106 m- 1. Then its wavelength is ;
A)2x107m B)5x10 - 6m C)2x10 - 7 m D)None
A)Doubled B)half C)Reduced 4 times D)Remains Same
A)10/3 B)9 C)15 D)6
A)Attraction B)Repultion C)Netural D)None
154. EMF = VBLSinx (ANS : .................................. )
155.The force F experienced by a conductir of length L carrying current when placed in a uniform magnetic field B is given by the relation ;
A)F=ILxB B)F=IL.B C)F=IL/B D)F=LxB/I
157. Unit of longitudinal strain is ;
A)m B)1/m C)Unit less D)None of these
A)Forbidden band B)Conduction band C)Both D)None
A)reverse biased photodiode B)forward biased photodiode C)both D)none
A)Doubled B)half C)Increase 4 times D)Same
A)voltage & current B)voltage & intensity C)Intensity & current D)none
163. Force F is required to be applied on a body of 1 kg placed on inclined plane at an angle of 30° to move it. The force is : A)g B) g 3 C) g/3 D) g/2
164. A ball strikes another ball mass 2kg and 1kg at rest with a velocity 30ms - 1. If after the collision the velocities are 20 and 15ms - 1 , then (it undergo Elastic collision)
165. Two satellites S1 and S2 are with radius from the Centre of earth of 80,000 and 40,000 then their orbital velocity V1 and V2 are : A)2 V1 = V2 B) 2 V2 = V1 C) V1 = V2 D) None
166. A body takes a pendulum in the lift and it accelerates upwards the tension in the string : A)increases B) decreases C) first increases then decreases D) decreases then increases
167. The pressure in a pipe of varying cross sectional area, the pressure at smallest radius portion of it : A)min B)max C)Constant D)None
168. A car approaches C1 to another car C2 with a velocity of ....... If the apparent frequency of C1 , when it horns, for C2 is ....... The real frequency is? (ANS ; ____________________________)
169. In astronomical telescope the final image is formed at : A)near point B) infinity C)far time D)None
170. A gas is enclosed in a container fitted with a piston of cross-sectional area of 0.03m2 and pressure is maintained at 1000Nm - 2. When heat is slowly transferred, the piston is pushed up through a distance(d) of 4cm. And 100J heat is transferred to the system then find ∆U?
171. In Carnot engine the gas is expanded ...................... ??
172. A charge of 100mC passes through a potential difference of 100V of mass 0.1mg , then what is change in velocity?
173. When a 500Ω resistance is replaced by 100Ω in a cell, effect on terminal velocity?
174. Current passing through two wires in same direction : A)repel B) attract C)No effect D)None of these
175.A particle passes through the solenoid along the axis, then it will pass along the path ....... ; A)parallel to axis B)along spiral path C)etc (ANS ; ____________________ )
176.In RC circuit _____ leads the _______
177.If a bulb and capacitors are connected in series, the current passing is AC, then then bulb will ..... ; A)glow B)fused C)nothing happens D)None
178.Transistor is used as ................ ; (switch---right answer)
179.If inputs are different then for NAND gate, the output is? (ANS ; _____________________ )
180.A boy named Amir sees a scale placed on earth while he is in aero plane. Then the length of scale will ................; A)increased B)decreased C)same D)None
181.If the speed of body is increased, the mass of body will : A)increase B)decrease C)Constant D)None
182.As the temperature increases , no of longer wavelength radiation : A)increases B)decreases C)Both A & B D)None
183.When photo electrons are emitted from metal surface then what would be greater than threshold? A)intensity B)frequency C)both D)None
184.Davison and Germer experiment proves : A)wave nature of electron B)particle nature of electron C)both D)None
185.Laser will produce if the atoms in lower energy states are _______ than those in higher energy states. : A)greater B)less C)equal D)All
186.A flexible loop of wire is lying such that field of lines are parallel to area. If area begins to change then emf induced is : A)max B) zero C)both D)None
187.In FM , the amplitude of carrier wave is : A)diminished B)increased C)both D)None
188. e/m value of electron is : A)constant B)variable C)strong D)none
189.The ratio of gravitational mass to inertial mass is : A)1:1 B)2:1 C)1:2 D)3:1
190.In RLC series circuit, the current at resonance frequency is : A)Min B)Max C)Zero D)None
191.The indicator may store energy in its ; A)Coil B)Magnetic field C)Electric field D)both B & C
192.A force of 9N act perpendicular to force of 16 N resultant will be? A)33 B)14 C)18 D)25
193. If Thermistor Is Placed In Oven If Temp Of oven Is Increased Then The A) R Increses B) R Decreses C) R is Same D) None
194. A Body is accelerating downward with 9.8m/s2. If we throw it with some force, then acceleration will be: A) More than 9.8 B) Less than 9.8 C) Equal D) None
195. To Increase Charging of Capacitor A) Resistance Decrease B) Capacitance Increases C) Fixed Capacitance D) None of above
196. The Angular Frequency Of A Pendulum Is 1 Rad/sec Its Length Will Be : A) 24 m B) 9.8 m C) 98 m D)None
197. The Table Represents
A) And B) Nand C) OR D) Both A & C
198. If 1 micro coulumb charge is pass through wire in 1 micro second then current will be : A) 1 A B) 1 Micro Ampere C) 1 Micro Volt D) None
199. Orbital speed of stallites going around the earth increased if the distance from earth is...... A)Increased B) Decreased C) Remain same D)None
200. A helicopter is ascending vertically at the rate of 19.6 m/s when it is at a height of 156.8m above the ground. How long the stone takes to reach the ground : A)8 Sec B)4 Sec C)2 Sec D)6 Sec
201. Tesla is a unit of magnetic field is equal to ....? A) Nm/A B) NmA C)N/mA D)None
202. voltage-current graph of non ohmic device is ...... ; A) Is not straight line B) straight line C) parabola D)None
203.Amp-meter is a galvanometer with a : A) High resistance connected in parallel B) Low resistance connected in parallel C) High resistance connected in series D) Low resistance connected in series
204. A body of 100 Kg mass and 100m radius and 36m/s speed has centripetal force : A) 100N B) 50N C) 70N D) 33N
205. If power of body is 10 J/s then energy of body is : A)100 J B)10 J C)1000 J D)50 J
206. A train travelling and sound of whistle has frequency 5270 Hz. The frequency of sound heard by the driver was : A)5270 Hz B) more than 5270 Hz C) less than 5270 Hz D)None
207. The direction of induced current is always so as to oppose the change which causes to produce current : A) Lenz Law B) Farady Law C)Newton Law D)None
208. Milkians method is used to determine ???? : A) e/m of electron B) Charge On Electron C) Mass Of Electron D)None
209. If three resistances r connected in parallel thier eqivqlent resistance is : A) R/3Ω B) 9R C) 3R D)R
210. If three resistances r connected in series Then Thier Eqivalent resistance is : A)3R B) 9R C) R/9 D) 3/R
211. Voltmeter is a device which has : A) High internal resistance B) low internal resistance C)No internal Resistance D)Negligible Resistance
212. A 500 Kg rocket travels in deep space at a constant speed of 3000m/sec. The power being produced by the rocket engine at this time is : A)1500KW B)6KW C)0.16KW D)None of these
213. A shell is fired at an angle of 45° above ground with an initial velocity of 100m/Sec. It will hit the ground, assuming " g= 10m/sec2 ", after about : A)7 Sec B)10 Sec C)14 Sec D)20 Sec
214. Find the average speed of a car whose velocity-time graph is shown in the figure : A)10m/Sec B)15m/Sec C)17.5m/Sec D)20m/Sec
215. A girl stands on a weighing scale placed in a stationary lift (elevator). The scale reads 30 Kg. The lift is then activated to move from ground floor to 10th floor. As the lift moves from its stationary position on the ground floor until it comes to rest on the 10th floor, the scale reading will :
A)Remain Constant B)First decrease, become constant for some time, and then increase C)First increase, become constant for some time, and then increase D)First increase, become constant for some time, and then decrease
216. A 1000 Kg truck pulls a 500 Kg car by means of a rope with a speed of 10 m/Sec. The rope suddenly breaks causing the truck to move forward with a speed of 13 m/Sec. Find the speed of the car after the rope breaks. A)13 m/Sec in the same direction B)4 m/Sec in the opposite direction as that of the truck C)ZERO m/Sec D)4 m/Sec in the same direction as that of the truck
217. In an inelastic collision between two bodies, the following is conserved: A)Kinetic energy only B)Momentum only C)Kinetic energy and momentum D)Total energy and momentum
218. As the water falls from a tap, its cross sectional area should decrease according to : A)Bernoulli's equation B)Continuity equation C)Venturi relation D)None of these
219. A 100 KG satellite orbiting 400 Km above earth has an orbital speed of v Km/hour. A 200 KG satellite with the same orbit radius will require an orbital speed : A)v Km/Hr B)2v Km/Hr C)v/2 Km/Hr D)2 Km/Hr
220. The phenomenon of interference occurs in : A)Sound waves only B)Visible Light only C)All types of waves D)Radio waves only
221. The density of oxygen is about 16 times that of hydrogen. Therefore, if speed of sound in oxygen is x, its speed i hydrogen will be : A)Greater than x B)Less than x C)The same D)Depending upon the pressure of gases
222. A police motor cycle running at 130 Km/hr sounds a siren of 2KHz frequency while chasing a car running at 150 Km/hr. The apparent frequency of the siren heard by the car driver will be : A)Greater than 2 KHz B)2 KHz C)The siren will not be heard by the car driver D)Less than 2 KHz
223.Young's double slit experiment is used to study interference of : A)Microwaves B)Radio Waves C)Sound Waves D)Visible Light
224. You have 10 resistors available, each of 20 KΩ. You need to form a 2.5 KΩ resistor for your circuit using the available resistors. You can connect : A)Eight 20 KΩ in series B)Eight 20 KΩ in parallel C)Four 20 KΩ in parallel D)None of the above
225. You have 15 capacitors available,each of 15 nanoF. You need a capacitance of around 150 nanoF in a circuit. You can achieve this value by connecting : A)10 in Series B)12 in Series C)10 in Parallel D)8 in Parallel
226. Current through a 2 mH inductor is l(r) = 2Sin 100r Amps. The voltage across the inductor will be : A)400mV B)400cos 100r mV C)4cos 100r mV D)4Sin 100r mV
227. The following device does not use electromagnetic waves for its operation : A)Ultra-sound Machine B)Radar C)X-Ray Machine D)Mobile phone
228. A transistor CANNOT be used as a : A)Switch B)Amplifier C)Power Source D)Inverter
229. A 1000 KG truck carrying a load of 500 KG travels on a mountain road for 5 minutes at constant speed. Its power output is 2500 Watts. Assuming " g = 10 m/Sec2 ". It will achieve a vertical height of : A)75m B)50m C)1.2m D)100m
230. A thermistor with positive temperature cofficient is used to measure temperature in an oven. When temperature of the oven increases, the resistance value of the thermistor : A)Decreases B)Increases C)Remains Unchanged D)None of above
231. When a metal surface is exposed in light, it may emit electrons. The maximum energy of these electrons depends on : A)Intensity of light B)Area of metal surface C)Wavelength of light D)All of the above
232.The truth table shown in fogure is implemented by :
A)NOR gate B)AND gate C)OR gate D)XOR gate
233. Reception of a particular radio station is selected by turning knob of a radio. Turning the tuning knob changes the : A)Inductance B)Capacitance C)Resistance D)None of the above
234. AC voltage is fed into a single diode rectifier. The output of the rectifier is : A) Full wave rectified DC Voltage B) Half wave rectified DC Voltage C)Doubled frequency AC Voltage D) None of Above
235. In frequency modulation , the amplitude of the carrier waves remains the same but its frequency changes in proportion to : A) The amplitude of the modulationg signal B) The sign of the modulating signal C) The frequency of the modulating signal D) All of the above
236. An A.C. generator produces alternating voltage of X Volts rms. The peak value of this alternating voltage is : A)1.414X Volts B)X/2 Volts C)X/2 Volts D)X2/2 Volts
237 A transformer has 100 turns on the input side and 500 turns on the output side. If the rms values of the input voltage and current are 220 V and 2 A respectively, then the output power is about : A)480 Watts B)1440 Watts C)440 Watts D)90 Watts
238. According to Heisenberg's uncertainty principle, for any given particle it is not possible to accurately measure : A)Both position and momentum B)Its position C)Its momentum D)Its velocity
239. One of the environment friendly means of generating electric power is from Bio-gas. Bio-gas is : A)Available naturally in oil reserves B)Not a gas C)Available in rivers D)Produced from catle waste
240.You have 20 inductors available each of 15H. You need an inductor of 1H in a circuit. You achieve it by combination? A) 15 inductor in parallel B) 20 inductors in series C) 15 inductors in series D) 20 inductors in parallel
241.A themistor with negative temperature coefficient is placed in a furnance. When temperature of furnance increases the resistance? A)decrease B)Increase C)Remain same D) No effect
242. In frequency modulation,the amplitude of carrier waves remain same but its frequency changes propotional to? A)The amplitude of modulating signals B)The sign of modulating signals C)The frequency of modulating signals D)All of these
243.When you drop a ball it accelerate at 9.8m/Sec. If you instead throw it downward then it accelerate immediately after leaving your hand assuming no air resistance ??? : A)9.8 B)more than 9.8 C)less than 9.8 D)None
244.In an inelastic collision between two bodies, following is reserved? : A)Energy B)Momentum C)Both a and b D)None
245.As the water falls from the tap,the cross-sectional area should decrease according to ? A)Equation of continuity B)Bernoulli's equation C)Venturi relation D)None
246. If two NOT gates in parallel is attached to a NAND gate in series, the gate formed is? A)NOR B)NAND C)OR D)XOR
247. In circuit X, L=100mH and C=100µF are attached in series. In circuit Y, L=100mH and C=10µF are attached in parallel. The resonating frequency Fx and Fy are related as? A) Fx = Fy B)Fx = 10Fy C)Fx =0.01 Fy D)Cannot be determined
248.A transformer has 100 turns on the input side 500 turns on the output side. If rms value of input voltage are 220V and 5A respectively. The output power is? : A)500Watt B)1100Watt C)1440Watt D)50Watt
249.A truck of mass 5000Kg and a car of mass 1000Kg are both travelling at a speed of 36Km/hr. Assume the time required to stop the truck in 10 sec is X newton and the force required to stop the car in 10 sec is Y newton. The difference X and Y is equal to? A)4Mega Newton B)4Kilo Newton C)14.4Kilo Newton D)14.4Mega Newton
250.A tight wire is clamped at two points 2m apart. It is plucked near one end, What are the three longest wavelengths produced on the vibrating wire? A)2m,1m,0.67m B)4m,2m,1.33m C)4m,2m,1m D)1m,0.5m,0.33m
251.When using optical fibre in data transmission, the angle of incidence of the light source on the glass fibre should be? : A) Less than critical angle B) Greater than critical angle C) Less than angle of refraction D) Greater than angle of refraction
252.Consider two spheres A and B or radii ra and rb both concentric with point charge Q. If ra greater than rb then the total flux passing normally through the sphere A and B is related as ? A)Flux through A is greater B)Flux through both sphere is equal C)Flux through A may be greater or less than Q depending on radius D)Flux through sphere B is greater
253.A mixture of two gases at constant temperature contain molecules of two kinds. The first kind of mass and rms speed and the second molecule has mass and rms speed . The ratio is C1/C2? A)m1/m2 B)m2/m1 C)[m1/m2]1/2 D)[m2/m1]1/2
254. A thermistor with negative temperature co-efficient is placed in a furnance. When temperature of furnance increases the resistance ? A)Decreases B)Increases C)Remain Same D)No effect
255. AC voltage is passed through single diode rectifier, the output of the bridge rectifier is ? A)Full wave DC B)Half wave DC C)Double frequency DC D)None
1 Comments
PAST PAPER GREATE POST SIR YOUR WORK IS NICE
ReplyDelete