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) $\ln 2,4 \ln 2$

Show Answer

Answer:

Correct Answer: 7. (a)

Solution:

  1. Entropy is a state functions. Therefore in both cases answer should be same.


NCERT Chapter Video Solution

Dual Pane