Q.

A 400 g solid cube having an edge of length 10 cm floats in water. How much volume of the cube is outside the water ?  
(Given : density of water = 1000 kg m–3

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a

1400 cm3 

b

400 cm3 

c

600 cm3 

d

4000 cm3 

answer is D.

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Detailed Solution

Mg=FB400×103=103×VdVd=400×106m3( Vol. )outside =10×1023400×106=600×106m2=600 cm3

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