An ideal gas undergoes change in its state from the initial state $I$ to the final state $F$ via two possible paths as shown below. Then,
  • Athere is no change in internal energy along path $1$
  • B
    heat is not absorbed by the gas in both paths
  • Cthe temperature of the gas first increases and then decreases for path $2$
  • Dwork done by the gas is larger in path $1$
KVPY 2018, Advanced
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