Physics MCQS

261. Among the following which waves cannot be polarized?
(A) Sound waves
(B) Radio waves
(C) X-Rays
D) Ultraviolet Rays

262. It is possible to distinguish between transverse and longitudinal waves by studying the property?
(A) Interference
B) Polarization
(C) Diffraction
(D) None of the above

263. ERG stands for what?
A) Electric Retino Graphy
(B) Energy Radio Graphy
(C) Electro Radio Graphy
(D) None of the above

264. A man inside an artificial satellite feels weightlessness because the force of attraction due to the earth is?
A) Equal of centripetal force
(B) Zero at the pole
(C) Balances the force of attraction due to the moon
(D) None of the above

265. The work done by a compound pendulum in one complete oscillation is?
(A) Equal to the kinetic energy of the pendulum
(B) Equal to the potential energy of the pendulum
(C) Equal to the total energy of the pendulum
D) Zero

266. The range of a projectile will be the same when the angle of projection is?
(A) 20 degrees and 80 degrees
B) 30 degrees and 60 degrees
(C) 25 degrees and 50 degrees
(D) 20 degrees and 45 degrees

267. Moment of inertia is a tensor of rank?
(A) 0th
B) 2nd
(C) 3rd
(D) 4th

268. If the distance between two mass particles is doubled, the gravitational force between them:
A. Is reduced to half of the original value
B. Is reduced to one fourth of the original value
C. Becomes double
D. Becomes four times

269. Angular displacement generally expressed in:
A. Degrees
B. Revolution
C. Radian
D. All of these

270. Radian is the unit of angular displacement which is:
A. Less than degree
B. Greater than degree
C. Equal
D. None of these