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BITSAT 2012
Exam
BITSAT
Year
2012
Subject
Physics
Chapter
Thermodynamics

BITSAT 2012 · Physics · Thermodynamics

A solid body of constant heat capacity 1 J / ^ ^ C is being heated...

A solid body of constant heat capacity 1J/∘C1 \mathrm{ J} /{ }^{{}^{\circ}} \mathrm{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∘C100^{{}^{\circ}} \mathrm{C} to final temperature 200∘C200^{{}^{\circ}} \mathrm{C}. Entropy change of the body in the two cases respectively is:

Options

  1. Aln⁡2,2ln⁡2\ln 2,2 \ln 2
  2. B2ln⁡2,8ln⁡22 \ln 2,8 \ln 2
  3. Cln⁡2,4ln⁡2\ln 2,4 \ln 2
  4. Dln⁡2,ln⁡2\ln 2, \ln 2

Correct answer

D. ln⁡2,ln⁡2\ln 2, \ln 2

Step-by-step solution

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