# NEET Physics Thermodynamics Questions Solved

In the diagrams (i) to (iv) , variation of volume with changing pressure is shown. A gas is taken along the path ABCD. The change in internal energy of the gas will be

(1) Positive in all cases (i) to (iv)

(2) Positive in cases (i), (ii) and (iii) but zero in (iv) case

(3) Negative in cases (i), (ii) and (iii) but zero in (iv) case

(4) Zero in all four cases

(4) In all given cases, process is cyclic and in cyclic process ΔU = 0.

Difficulty Level:

• 15%
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• 66%
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