Question

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

Answer 1

Here is your answer ⬇️⬇️⬇️⬇️⬇️

C) Both produce waves of the same wavelength having constant phase difference.

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Answer 2

The correct answer is C)

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