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MHT CET Physics question

PhysicsWavesMHT CET

A wire under tension vibrates with a fundamental frequency of 600 Hz. If the length of the wire is doubled, the radius is halved and the wire is made to vibrate under one-ninth the tension. Then, the fundamental frequency will became

Answer: (D)

Solution

: doubling gives , one-ninth tension gives , halving

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Question ID VK-070332