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A small block of wood of specific gravit...

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))`

A

0.6 s

B

0.4 s

C

1.2 s

D

1 s

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The correct Answer is:
B
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