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A cylinderical tube open at both ends, has a fundamental frequency f in air. The tube is dipped vertically in water so that half of it is in water. The fundamental frequency of air column is now

A

n/2

B

n

C

2n

D

4n

Text Solution

Verified by Experts

The correct Answer is:
B
`n_1=n " " l_2=l/2`
`n_2/n_1 = (v)/(4l//2) (2l)/(v) = 1`
`n_2 = n_1 =n`
Since when the tube is dipped in water it acts as open at one end closed to the other end.
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