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Q.

Carnot cycle (reversible) of a gas represented by a Pressure-Volume curve is shown in the diagram.Consider the following statements:I. Area ABCD = Work done on the gasIII. Area ABCD = Net heat absorbedIII. Change in the internal energy in cycle = 0Which of these are correct

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a

I only

b

II only

c

II and III

d

I, Il and III

answer is C.

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Detailed Solution

work done by the gas (as cyclic process is clockwise)∴ W= Area ABCDSo from the first law of thermodynamics ΔQ (net heat absorbed)= W = Area ABCDAs change in internal energy in cycle ΔU=0.
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