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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 be transverse wave .

C

Mechanical wave cannot propagate in vacuum .

D

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

Text Solution

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The correct Answer is:
D
Polarization helps us to distinguish between sound wave and light wave .
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