WAVE OPTICS
Objective
Type Questions (One option is correct)
1. By corpuscular
theory of light, the phenomenon which can be explained is:
(1) Reflection
(2) Interference
(2) Interference
(3) Diffraction
(4) Polarisation
(4) Polarisation
Sol. Answer (1)
2. Two coherent sources
of light can be obtained by:
(1) Two different lamps
(2) Two different lamps but of same
power
(3) Two different lamps of same power
(4) By dividing a wavefront
Sol. Answer (4), Two different sources can never be coherent.
3. The idea of
secondary wavelets for the propagation of light wave was first given by
(1) Newton
(2) Huygens
(3) Maxwell
(4) Fresnel
(2) Huygens
(3) Maxwell
(4) Fresnel
Sol. Answer (2)
4. Two sources of waves are called
coherent if
(1) Both have same amplitude of
vibration
(2) Both produce waves of same
wavelength
(3) Both produce waves of the same
wavelength having constant phase difference
(4) Both produce waves having same
velocity
Sol. Answer (3), Definition of coherent sources.
5. Wave front means:
(1) All particles in it have same phase
(2) All the particles have opposite
phase of vibration
(3) Few particles are in same phase,
rest are in opposite phase
(4) None of these
Sol. Answer (1)
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