Q .     A transverse sinusoidal wave moves along a string in the positive `x-`direction at a speed of `10` cm/s. The wavelength of the wave is `0.5` m and its amplitude is `10` cm. At a particular time t, the snap-shot of the wave is shown in figure. The velocity of point `P` when its displacement is `5` cm is

JEE 2008
A

`(sqrt3π)/50j^ `m/s

B

−`(sqrt3π)/50 i^ `m/s

C

−`(sqrt3π)/50j^` m/s

D

`(sqrt3π)/50 i^` m/s

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