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It is desired to increse the fundamental...

It is desired to increse the fundamental resonance frequency in a tube which is closed at one end. This can be achieved by

A

replacing the air in the tube by hydrogen gas

B

increasing the length of the tube

C

decreasing the length of the tube

D

opening the closed end of the tube

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`n prop v//l`
To incrase fundamental resonance frequency of tube.
Velocity of sound in hydrogen can be increased.
Length of tube can be decreased.
For tube closed from one end fundamental frequency is `v//4l`
For tube open from both ends fundamental frequency is `v//2l`
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