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Question

Density of ice is 900 kg/m3. A piece of ice is floating in water (of density 1000 kg/m3). The fraction of volume of the piece of ice outside the water is:

A
0.9
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B
0.1
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C
0
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D
0.7
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Solution

The correct option is A 0.1
The forces acting on the ice must balance each other.
Hence buoyant force acting upwards = Weight of the ice

Vimmρg=Vdg
VimmV=dρ=0.9

Hence, the fraction of ice outside water =10.9=0.1

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