Q81 / 120 · VITEEE 2008 · Physics

Two beams of light will not give rise to an interference patern, if

A
they are coherent
B
they have the same wavelength
C
they are linearly polarized perpendicular to each other
Correct answer
D
they are not monochromatic

Solution

Two beams of light give rise to an interference pattern if they are coherent, they have same wavelength/frequency in same phase or having a constant phase difference and same state of polarisation. Interference pattern can not be obtained if the two beams are not mono chromatic.

Hence, the correct answer is option: 'D'.

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