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Two sources of waves are called coherent...

Two sources of waves are called coherent if

A

Both have the same amplitude of vibrations

B

Both produce waves of the same wavelength

C

Both produce waves of the same wavelength having constant phase difference

D

Both produce waves having the same velocity

Text Solution

Verified by Experts

The correct Answer is:
C
Two coherent sources must have a constant phase difference otherwise they can not produce interference.
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