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MHT CET Physics question

PhysicsWavesMHT CET

'n' waves are produced on a string in 1 second. When the radius of the string is doubled, keeping tension same, the number of waves produced in 1 second for the same harmonic will be [MHT-CET 2021]

Answer: (B)

Solution

with , so and doubling the radius gives ; 2n

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Question ID VK-070571