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Q.

4/5th of a cylindrical block of wood floats in a liquid. Assuming the relative density of wood be 0.4 find the density of liquid.

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a

104 kg/m3

b

103 kg/m3

c

5×102 kg/m3

d

5×103 kg/m3

answer is C.

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Detailed Solution

Volume of liquid displaced = 4/5VWbody = Wt of liquid displacedV×0.4×103×g=45×ρ×g×V0.4×103=45ρ ρ=5×102kg/m3
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