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A whistle whose air column is open at bo...

A whistle whose air column is open at both ends has a fundamental of 5100 Hz . If the speed of sound in air is `340m* s^(-1)` , the length of the whistle in cm, is

A

`5 //3`

B

`10//3`

C

5

D

`20//3`

Text Solution

Verified by Experts

The correct Answer is:
B
If the length of whistle is l, then the frequency of the fundamental tone , `n_(0) = (V)/(2l) ` [V = velocity of sound]
`:. l = (V)/(2n_(0)) = (340)/(2 xx 5100) = (1)/(30 ) m = (10)/(3)` cm
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