Q.

A body floats in a liquid of relative density 1.5 with 40% of its volume outside that liquid. If 50% of volume of same body remain in oil, the relative density of oil is

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a

1.0

b

1.5

c

1.8

d

1.75

answer is C.

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Detailed Solution

condition of  floating Buoyant force is equal to weight of the body i.e  Vinside× dl  = weight of the body   here   0.6V 1.5=W 0.5V  doil =W  equating we get doil= 1.8
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A body floats in a liquid of relative density 1.5 with 40% of its volume outside that liquid. If 50% of volume of same body remain in oil, the relative density of oil is