JEE Main20203 Sep 2020Morning ShiftPhysicsThermal Properties of MatterActual
A bakelite beaker has volume capacity of 500   cc at 30 ° C . When it is partially filled with V m volume (at 30 ° C ) of mercury, it is found that the unfilled volume of the beaker remains constant as temperature is varied. If γ bester  = 6 × 10 - 6 0 ° C - 1 , where γ is the coefficient of volume expansion, then V m (in cc ) is close to …
Correct answer
20
Step-by-step solution
∆ Vm = ∆ Vc Vmγm ∆ T = Vcγc ∆ T Vm = Vcγc γm = 500 × 6 × 10 - 6 1 . 5 . × 10 - 4 = 20 cc