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  1. A stretched string resonates with tuning fork frequency 512 Hz when length of the string is 0.5 m. The length of the string required to vibrate resonantly with a tuning fork of frequency 256 Hz would be
    1. 0.25 m
    2. 0.5 m
    3. 1 m
    4. 2 m
Correct Option: D

ƒ =
1
T
1/2
2lμ

When f is halved, the length is doubled.


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