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MHT CET Physics question

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A closed and open organ pipe of same length produce 2 beats when they are set into vibrations simultaneously in their fundamental mode. The length of the open organ pipe is now halved and that of the closed pipe is doubled. The number of beats produced will be [MHT-CET 2023]

Answer: (A)

Solution

Initially , so Hz. Now open pipe (length ): Hz;

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Question ID VK-070442