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Physics Thermodynamics Mix MCQ (Single Correct)

10 liters of ideal gas at atmospheric pressure is compressed isothermally to volume of 1 liter and then allowed to expand adiabatically to 10 liters. Choose the correct options related to this –

A
Net work is done on gas
B
Net work is done by gas
C
Final pressure is equal to initial pressure
D
final pressure is less than initial pressure

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The correct answer is:
CHECK THE SOLUTION.

(a, d)

AB: isotherm

BC: adiabat

Area under AB curve is more than BC Curve hence het work done is negative and hence work is done on system (gas). As can be seen from graph P f final pressure is less than initial pressure P i i.e. P f < P i

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