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An organ pipe filled with a gas at 27^(@...

An organ pipe filled with a gas at `27^(@) C` resonates at `400 Hz` in its fundamental mode. If it is filled with the same gas at `90^(@) C`, the resonance frequency will be

A

`420Hz`

B

`440Hz`

C

`484Hz`

D

`512Hz`

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The correct Answer is:
B
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