Thermodynamics - Result Question 44

46. Which of the following processes is reversible?

(a) Transfer of heat by conduction

[2005]

(b) Transfer of heat by radiation

(c) Isothermal compression

(d) Electrical heating of a nichrome wire

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Answer:

Correct Answer: 46. (c)

Solution:

  1. (c) Isothermal process occur very slowly so it is quasi-static and hence it is reversible.

The conditions for reversibility

  • Must take place infinitely slowly
  • The temperature of the system must not differ appreciably
  • There must be complete absence of dissipative forces such as friction, viscosity, electric resistance, etc.