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MHT CET Physics question

PhysicsWavesMHT CET

A sonometer wire stretched by weight 'W' is in unison with a tuning fork. The corresponding resonating length is 'L'. If the weight is increased by '3W' the corresponding resonating length of the sonometer in unison with same tuning fork becomes 'L'. The ratio is [MHT-CET 2020]

Answer: (A)

Solution

For a fixed frequency ; tension changes from to , so and

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Question ID VK-070608