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Question

A circular loop of rope of length L rotates with uniform angular velocity ω about an axis through its centre on a horizontal smooth platform. Velocity of pulse (with respect to rope) produced due to slight radial displacement is given by
294071_06072e35f7d24661b19e75c422dbf379.png

A
ωL
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B
ωL2π
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C
ωLπ
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D
ωL4π2
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Solution

The correct option is B ωL2π
wave velocity
=ωk=ω2π/L=ωL2π
Hence option (B) is correct

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