Q.
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
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a
20%
b
35%
c
10%
d
25%
answer is C.
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Detailed Solution
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=Vρg⇒Vin=ρσV or Vout =V−Vin=σ−ρσV⇒Vout V=σ−ρσ=1000−9001000=110∴Vout =10% of V
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