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JEE Main 8 Jan 2020 Shift 1 Solved Paper

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Question : 25

Total: 75

A one metre long (both ends open) organ pipe is kept in a gas that has double the density of air at STP. Assuming the speed of sound in air at STP is 300 m/s, the frequency difference between the fundamental and second harmonic of this pipe is _________Hz.

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