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For a resonance tube, the air columns fo...

For a resonance tube, the air columns for the first and the second resonance differ in length by `31.5 cm`. The wavelength of the wave is

A

31.5cm

B

63.0cm

C

126.0cm

D

252.0cm

Text Solution

Verified by Experts

The correct Answer is:
B
The first resonating length is `l_1+e=lamda/4`
The second resonating length is `l_2 +e= (3lamda)/(4)`
`l_2-l_1 = lamda//2 = 2xx 31.5=63cm`
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