A body of density D is droped gently on the surface layer of liquid of density 'd' and depth 'h'. If D > d, the downward acceleration of the body while sinking is :

Options

A. g
B. `g(1-d/D)`
C. `g(1+d/D)`
D. `(g.d)/D`

Answer

B

Explanation

Here resultant downward force
`=mg-M/Dxxdxxg`
`therefore`acc.a=`(mg[1-d/D])/m=g[1-d/D]`
Correct choice is (b).