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MHT CET Physics question

PhysicsWavesMHT CET

For a certain organ pipe, three successive resonant frequencies are heard as 300 Hz, 420 Hz and 540 Hz. If the speed of sound in air is 360 m/s, then the pipe is a [MHT-CET 2023]

Answer: (A)

Solution

The successive difference is 120 Hz , so the fundamental is Hz and the frequencies 300, 420, 540 are the 5th, 7th and 9th multiples, i.e. only odd

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Question ID VK-070454