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MHT CET Physics question

PhysicsWavesMHT CET

A string in a musical instrument is 50 cm long and its fundamental frequency is 800 Hz. Keeping the tension applied to the string same, the change in the length to produce sound note of fundamental frequency 1000 Hz will be [MHT-CET 2020]

Answer: (B)

Solution

For constant tension , so cm and the change in length is

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Question ID VK-070604