1.

A body floats with one third of its volume outside water and 3/4 of its volume outside another liquid. The density of other liquid is :

Answer»

9/4g/cc
4/9 g/cc
8/3 g/cc
2/9g/cc

Solution :According to law of floatation, WT. of body in water = wt. of LIQUID displaced
`thereforeVp_(s)g=(2V)/3p_(w)grArrp_(s)=2/3p_(w)`
Similarly in liquid,
`Vp_(s)g=1/4.Vp_(l)grArrp_(l)=4p_(s)`
or `p_(l)-4. 2/3p_(w)-8/3p_(w)`
`pl=8/3xx1gcm^(-3)`
So the correct choice is (c).


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