Efficiency depends upon:
Correct answer: C. Both a and b
- A. Temperature of source
- B. Temperature of sink
- C. Both a and b
- D. Working substance
Explanation
The efficiency of a heat engine depends on both the temperature of the source (where heat is absorbed) and the temperature of the sink (where heat is rejected). It follows the Carnot efficiency formula: η=1− Tsink/ Tsource .
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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