NEET UG PHYSICS MCQ: THERMODYNAMICS

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In a thermodynamic process, pressure of fixed mass of a gas is changed in such a manner that the gas releases 20 J of heat and 8 J of work is done on the gas. If initial internal energy of the gas was 40 J, what will be final internal energy ?

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Correct option: B

28 J

Option B (28 J) is correct because the final internal energy is calculated using the first law of thermodynamics, accounting for heat released and work done on the gas.

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