Heat and Thermodynamics 6 Question 3
7. A solid body of constant heat capacity $1 J /{ }^{\circ} C$ is being heated by keeping it in contact with reservoirs in two ways
(i) Sequentially keeping in contact with 2 reservoirs such that each reservoir supplies same amount of heat.
(ii) Sequentially keeping in contact with 8 reservoirs such that each reservoir supplies same amount of heat.
In both the cases, body is brought from initial temperature $100^{\circ} C$ to final temperature $200^{\circ} C$. Entropy change of the body in the two cases respectively, is
(2015 Main)
(a) $\ln 2, \ln 2$
(b) $\ln 2,2 \ln 2$
(c) $2 \ln 2,8 \ln 2$
(d) $\ln 2,4 \ln 2$
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Answer:
Correct Answer: 7. (d)
Solution:
- Entropy is a state functions. Therefore in both cases answer should be same.
