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Q: What is the unit of the Physical quantity Entropy?
  • A. Watt per kelvin
  • B. Newton per kelvin
  • C. Pascal per kelvin
  • D. Joule per Kelvin
Correct Answer: Option D - Joule per Kelvin is the unit of the physical quantity Entropy. In thermo dynamics, Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Its symbol is S, that part of the total energy of a body that cannot be used it is called Entropy of body.
D. Joule per Kelvin is the unit of the physical quantity Entropy. In thermo dynamics, Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Its symbol is S, that part of the total energy of a body that cannot be used it is called Entropy of body.

Explanations:

Joule per Kelvin is the unit of the physical quantity Entropy. In thermo dynamics, Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Its symbol is S, that part of the total energy of a body that cannot be used it is called Entropy of body.