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A glass tube of length 1.0 m is complete...

A glass tube of length `1.0` m is completely filled with
water. A vibrating tuning fork of frequency `500` Hz is
kept over the mouth of the tube and the water is
drained out slowly at the bottom of the tube. If the
velocity of sound in air is 330 `ms^(-1)`, then the total
number of resonances that occur will be

A

2

B

3

C

1

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
`f_(1)=(v)/(2l_(1))impliesl_(1)=(330)/(2xx500)=33cm`
`l_(2)=2xx33=66cm`
`l_(3)=3xx33=99cm`
Number of resonances = 3.
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