Thermodynamics Question 304
An ideal gas has temperature $ T _{1} $, at the initial state shown in the P-V diagram. The gas has a higher temperature $ T _{2} $ at the final states a and b, which it can reach via the paths shown. The change in entropy:
Options:
A) greatest in a way
B) greatest in b.
C) identical in a and b
D) nothing can be said
Show Answer
Answer:
Correct Answer: B
Solution:
$ Q _{a}=\Delta U+0=\Delta U\text{ and }Q _{b}=\Delta U+W $
$ \text{As }Q _{b}>Q _{a}, $
$ \therefore $ Change in entropy is greater in case [b].
BETA
