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MHT CET Physics question

PhysicsWavesMHT CET

Two forks and when sounded together produce four beats . The fork is in unison with 30 cm length of a sonometer wire and is in unison with 25 cm length of the same wire at the same tension. The frequencies of the forks are

Answer: (B)

Solution

gives and , so Hz and

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Question ID VK-070302