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Which of the following is incorrect ?...

Which of the following is incorrect ?

A

If the wave is longitudinal, it must be a mechanical wave.

B

If the wave is mechanical , it may OR may not been transverse wave

C

Mechanical waves cannot propagate in vacuum

D

Diffraction helps us to distinguish between sound wave and light wave.

Text Solution

Verified by Experts

The correct Answer is:
D
Both sound waves and tight waves are diffracted so diffration does not help us to distinguish between sound and light waves.
So correct choice is d.
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