A mercury pallet is trapped in a tube as shown in figure. The tube is slowly heated to expel all mercury inside it (Isothermal condition). Heat given to the tube in 10 –3 J is: ( ρ Hg = 13.6 gm/cc, Atmospheric pressure = 10 5 Pa, cross–section area of tube = 2 cm 2 )

Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(2.136 J)

W gas = 
= mg λ + P 0 λ A [m = mass of Hg pallet]
= 2.136 J
∴ Δ Q = Δ W
= 2.136 J
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