Question:medium
A tuning fork of frequency 392 Hz resonates with 50 cm length of a string under tension T. If the mass of the string is decreased by 2%, keeping the tension constant, the number of beats heard when the string and the tuning fork are made to vibrate simultaneously is
A tuning fork of frequency 392 Hz resonates with 50 cm length of a string under tension T. If the mass of the string is decreased by 2%, keeping the tension constant, the number of beats heard when the string and the tuning fork are made to vibrate simultaneously is
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For small changes:
(Δ f)/(f) ≈ -(1)/(2)(Δ μ)/(μ)
Updated On: Mar 20, 2026
- 4
- 6
- 8
- 12
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The Correct Option is A
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