361. An observer moves past a stationary electron on the earth’s surface. His instrument measures?
(A) Only magnetic field
(B) Only electric field
C) Both magnetic and electric fields
(D) Neither electric nor magnetic fields
362. A crucial experiment that led to the theory of relativity was performed by the?
(A) Albert Einstein
(B) Samuel Ether
(C) Pavel Cerenkov
D) Michelson and Morley
363. Longitudinal waves do not exhibit?
A) Refraction
(B) Polarization
(C) Reflection
(D) Diffraction
364. Beats are the results of?
(A) Constructive interference
(B) Destructive interference
C) Constructive and Destructive interference
(D) Diffraction
365. Among the following, which is not electromagnetic in nature?
A) Beta rays
(B) Infrared rays
(C) Ultraviolet rays
(D) Gamma rays
366. A hunter aiming at a bird in a tree should aim:
A. Exactly at the bird
B. A little above the bird
C. A little below the bird
D. Very high
367. If a projectile is projected horizontally with 10 m/s. After 2 seconds, the horizontal and vertical components of the velocity of the projectile will be:
A. 10 m/s, 10 m/s
B. 10 m/s, 0 m/s
C. 0 m/s, 10 m/s
D. 10 m/s, 19.6 m/s
368. The time rate of change of linear momentum of a freely falling object is equal to:
A. Impulse
B. Weight
C. Kinetic energy
D. Power
369. Two blocks of masses 2 kg and 3 kg placed in contact are acted upon by a force of 50 N. The acceleration of the 1.0 kg mass will be:
A. 40 m/s²
B. 10 m/s²
C. 30 m/s²
D. 50 m/s²
370. Action and reaction pairs are formed at a:
A. Single body
B. Pair of bodies
C. Both single and pair of bodies
D. None
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