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A sitar wire 1 m long emits a note of fr...

A sitar wire 1 m long emits a note of frequency 480 Hz. How far from the top it may be pressed to get a note of frequency 512 Hz.

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The correct Answer is:
`l_(2)=n_(1)l_(1)//n_(2)=480 xx 1//512=0.937 m`, string must be pressed at 1-0.937=0.063m
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