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Q.

The frequency of fundamental tone in an open organ pipe of length 0.48 m is 320 Hz.  Speed of sound is 320 m/sec. Frequency of fundamental tone in closed organ pipe will be 

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a

160.0 Hz

b

153.8 Hz

c

320.0 Hz

d

143.2 Hz

answer is B.

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Detailed Solution

nClosed=12(nOpen)=12×320=160 Hz

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