# NEET Physics Waves Questions Solved

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A string of length L and mass M hangs freely from a fixed point. Then the velocity of transverse waves along the string at a distance x from the free end is

(1) $\sqrt{gL}$

(2) $\sqrt{gx}$

(3) gL

(4) gx

(2) Velocity $v=\sqrt{\frac{T}{m}}$; where T = weight of part of rope hanging below the point under consideration $=\left(\frac{M}{L}\right)xg$

$v=\sqrt{\frac{\left(\frac{M}{L}\right)xg}{\left(\frac{M}{L}\right)}}=\sqrt{xg}$.

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