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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  1998
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Q)

A rigid rod is placed against the wall as shown in figure. When its velocity of lower end is $10 ms^{ –1}$ and its base makes an angle $\alpha$ = 60° with horizontal, then the vertical velocity of its end B will be :



( A ) 5$\sqrt{3}$
( B ) $\frac{5} {\sqrt{3}}$
( C ) $\frac{10} {\sqrt{3}}$
( D ) $10{\sqrt{3}}$

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