physics MCQs – Page 11

Practise multiple-choice questions from physics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

physics Mcqs
201. Many of the semi conductors are crystals of the type__________________?
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A. Simple cubic

B. Face centred cubic

C. All of the above

D. Body centred cubic

202. A body in equilibrium__________________?
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A. May be at rest or in motion

B. Always in uniform motion

C. May be at rest or in uniform motion

D. Always at rest

203. Which one of the following radiations possesses maximum velocity ?
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A. ?-rays

B. ?-rays

C. ?-rays

D. All of above have the same speed

204. If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?
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A. No light

B. Remains same

C. Brightness decreases

D. Brightness increases
205. When a pure inductor of inductance L and a pure capacitor of capacitance C are connected in parallel to a sinusoidal potential difference V the potential difference across both L & C will be_______________?
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A. At L will be more than at C

B. Same

C. At L will be less than at C

D. Different

206. ________________ cells converts solar energy into electrical energy?
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A. photovoltaic

B. non of these

C. galvanic

D. rotory

207. Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property_____________?
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A. B & C

B. A B & C

C. C & A

D. A & B

208. In which quadrant the two rectangular components of a vector have same sign ?
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A. 1st

B. 2nd

C. Both 1st and 3rd

D. 4th

209. The diameter of an atom is approximately_______________?
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A. 10-14m

B. 10-11m

C. 10-12m

D. 10-10m
210. SI unit of flux density is____________________?
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A. NmA-2

B. NmA-1

C. NAm-1

D. NA-1m-1
211. Null vector is a vector which has________________?
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A. Zero magnitude

B. No specified direction

C. Both A and B are correct

D. Both A and B are not correct

212. The band theory of solids explains satisfactorily the nature of_________________?
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A. Electrical semi conductors alone

B. Electrical insulators alone

C. Electrical conductors alone

D. All of the above
213. A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire ?
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A. 0.04J

B. 1.0J

C. 0.01J

D. 0.02J

214. The charge on an electron was determine by ________________?
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A. Ampere

B. Millikan

C. Maxwell

D. Thomson

215. Propulsion force of a rocket is____________________?
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A. non-conservative force

B. conservative force

C. both A and B

D. none of these

216. The most useful tracer is_________________?
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A. Sr-90

B. C-14

C. CA-41

D. I-131

217. Which one is not a type of dynamic equilibrium ?
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A. Rotational equilibrium

B. Translational equilibrium

C. Static equilibrium

D. Both A and C are corret answer

218. Antimatter consists of ______________?
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A. Antiproton

B. All of above

C. Positron

D. Antineutron

219. Geothermal energy is a _______________________ source of energy?
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A. none of the above

B. non-renewable

C. stable

D. renewable
220. Which of the following pairs does not have identical dimensions ?
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A. Mass and moment of inertia

B. Torque and energy

C. Energy and work

D. Momentum and impulse