Physics · Thermodynamics

Which of the following statements does NOT describe the second law of thermodynamics?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Every actual spontaneous process is irreversible.
2The entropy of a perfect crystal at absolute zero temperature is exactly equal to zero.✓
3Heat cannot pass spontaneously from a body of lower temperature to a body of higher temperature without external effort.
4It is impossible to build a perpetual motion machine of the second kind.

Correct answer

The entropy of a perfect crystal at absolute zero temperature is exactly equal to zero.

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