Sound WavesHard

Question

A tuning fork of frequency 240 Hz vibrates at one end of the tube shown in the figure. If sound is not heard at other end of the tube, the velocity of the waves will be -
       

Options

A.274 m/s
B.672 m/s
C.168 m/s
D.240 m/s

Solution

= πr - 2r =
But v = nλ = (240)(1.14) = 274 m/s

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