PHYSICS QUIZ-01, Wave Optics

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

(3) Diffraction                    
(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

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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