Questions
A uniform pressure P is exerted on all sides of a solid cube at , by what amount should the temperature of the cube be raised in order to bring its volume back to the value it had before the pressure was applied? (K is bulk modulus and is coefficient of linear expansion?
detailed solution
Correct option is B
bulk modullus of a material is K=PΔVV ; here P is pressure, ΔV is change in volume, V is initial volume ΔVV=PK.........(1) coefficient of linear expansion is α=Δll.ΔT ; here Δl change in length; l is initial length; ΔT is change in temperature coefficient of volume expansion is γ=3α ΔVVΔT=3.α ΔVV=3.α.ΔT substitute eqn(1) PK=3.α.ΔT ΔT=P3KαSimilar Questions
A glass vessel is partially filled with mercury and when both are heated together, the volume of the unfilled part of vessel remains constant at all temperature. Find the initial volume (in cm3) of mercury if the empty part measures 34 cm3
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