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Question

A piece of ice is floating in water. The fraction of volume of the piece of ice outside the water is [ρice900kg/m3 and ρwater=1000kg/m3]

A
0.21
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B
0.01
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C
0.1
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D
0.9
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Solution

The correct option is C 0.1
Let V be the total volume of ice piece and V' is the volume of ice piece which is outside the water, then (VV)ρwaterg=V ρice×g(VV)1000=V×900 or V=V10=0.1V. So, fraction of ice piece outside the water is, f=VV=0.1 .

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