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Two light sources are said to be coheren...

Two light sources are said to be coherent if they are obtained from

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

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Verified by Experts

The correct Answer is:
B
When two sources are obtained from a single source the wavefront is divided into two parts. These two wavelengths acts as if they emanated from two sources having a fixed phase relationship.
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RESONANCE-DAILY PRACTICE PROBLEM-DPP No.53
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