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Question: The ideal gas of mass m in a state A goes to another state B via three different processes as shown ...

The ideal gas of mass m in a state A goes to another state B via three different processes as shown in figure. If Q1, Q2 and Q3 denote the heat absorbed by the gas along the three paths, then –

A

Q1< Q2< Q3

B

Q1< Q2 = Q3

C

Q1 = Q2> Q3

D

Q1> Q2> Q3

Answer

Q1< Q2< Q3

Explanation

Solution

Initial and final states are same in all the

process. Hence DU = 0; in each case.

By FLOT; DQ = DW = Area enclosed by curve with volume axis.

\Area)1 < (Area)2 < (Area)3 ̃ Q1 < Q2 < Q3.