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

Question

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

Tardigrade Admin · Accepted Answer

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.

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

Two independent point sources emitting light of the same wavelength

A single point source

A wide source

Two ordinary bulbs emitting light of different wavelengths

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.