When a block of iron floats in mercury at 0°C a fraction k1 of its volume is submerged, while at the temperature 60ºC, a fraction k2 is seen to be submerged. If the coefficient of volume expansion of iron is γ Fe , then the ratio 
can be expressed as:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
For equilibrium is case 1 at 
Upthrust 
Weight of the body
For equilibrium in case 2 at 
. When the temperature is increased, the density will decrease.
Again upthrust 
weight of the body
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