A solid body of constant heat capacity is being heated by keeping it in contact with reservoirs in two ways : [2012]

Question

A solid body of constant heat capacity $1 J / ° C$ is being heated by keeping it in contact with reservoirs in two ways : [2012]

(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 $100 ° C$ to final temperature $200 ° C$ . Entropy change of the body in the two cases respectively is :

Smart Achievers · Accepted Answer

(4)

The entropy change of the body in the two cases is same as entropy is a state function.

Solution

1 $l n 2, 2 l n 2$

2 $2 l n 2, 8 l n 2$

3 $l n 2, 4 l n 2$

4 $l n 2, l n 2$

Ans.
(4)

The entropy change of the body in the two cases is same as entropy is a state function.

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Solution

1 ln2, 2ln2

2 2ln2, 8ln2

3 ln2, 4ln2

4 ln2, ln2