A piece of ice is floating in water. The fraction of volume of the piece of ice outside the water is [ρice−900kg/m3andρwater=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 C0.1 Let V be the total volume of ice piece and V' is the volume of ice piece which is outside the water, then (V−V′)ρwaterg=Vρice×g⇒(V−V′)1000=V×900orV′=V10=0.1V. So, fraction of ice piece outside the water is, f=V′V=0.1 .