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Question

A solid body of constant heat capacity
1 JC 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 reservoirs supplies same amount of heat in both cases the body is brought from initial temperature 100C to final temperature 200C. Entropy change of the body in two cases respectively is :

A
In2, 2In2
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B
In2,
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C
In2, 4In2
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D
2In2, 8In2
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Solution

The correct option is B In2,

It is the type of matter which has got fixed shape and volume .The force of attraction between any two molecules of a solid is very large .

- wherein

e.g.Nacl,Diamond,Graphite

\Delta S=\int\frac{msdt}{T}=ms\ln \left(\frac{T_{f}}{T_{i}} \right )

\Delta S=1.\ln \left(\frac{T_{f}}{T_{i}} \right )

Sis state depedent. Its value changes by changing state hence if remain same in two processes.

S =In2




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