1.

A small block of wood of specific gravity 0.5 is subnerged at a depth of 1.2 m in a vessel filled with water. The vessel is accelerated upwards with an acceleration a_(0) = (g)/(2). Time taken by the block to reach the surface, if it is released with zero initial velocity is (g = 10 m//s^(2))

Answer»

0.6 s
0.4 s
1.2 s
1 s

Answer :B


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