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%
• B. 35%
• C. 10%
• D. 25%

Answer 1

Answer: (C)

10%

Answer 2

Let the total volume of ice-berg is V and its density is ρ. If this ice-berg floats in water with volume V_in inside it then

$V _ { i n } \sigma g = V \rho g$ ⇒ $\sigma =$density of water]

or

⇒ $\frac { V _ { \text {out } } } { V } = \left( \frac { \sigma - \rho } { \sigma } \right) = \frac { 1000 - 900 } { 1000 } = \frac { 1 } { 10 }$

∴ of V