Optics Question 1019
Question: Two light sources are said to be coherent if they are obtained from
[MP PET 1996]
Options:
A) Two independent point sources emitting light of the same wavelength
B) A single point source
C) A wide source
D) Two ordinary bulbs emitting light of different wavelengths
Show Answer
Answer:
Correct Answer: B
Solution:
When two sources are obtained from a single source, the wavefront is divided into two parts. These two wavefronts acts as if they emanated from two sources having a fixed phase relationship.
