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Speed of Sound

When a sound ...

Question

When a sound wave travelling from one medium enters another medium, then the quantity that changes is :

A

velocity and wavelength but not frequency

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B

wavelength and frequency but not velocity

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C

frequency only

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D

neither velocity nor frequency nor wavelength

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Solution

The correct option is A velocity and wavelength but not frequency
When a sound wave travelling from one medium enters another medium, then the quantities that changes are velocity and wavelength. Frequency does not change. Option 'A' is correct.

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