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Question

An ice berg of density 900 Kg/m3 is floating in water of density 1000 Kg/m3. The percentage of volume of ice-cube outside the water is

A
20%
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B
35%
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C
10%
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D
25%
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Solution

The correct option is C 10%
Let the total volume of ice-berg is V and its density is ρ. If this ice-berg floats in water with volume Vin inside

it then Vinσg=VρgVin=ρσV [σ = density of water]

or Vout=VVin=σρσV

VoutV=σρσ=10009001000=110

Vout=10% of V


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