defence exam Indian Army Nursing Assistant Mock Test Series 2025 Physics Thermodynamics Second law of thermodynamics

Which of the following statements best describes the Second Law of Thermodynamics?

1
Heat flows spontaneously from hot to cold, and entropy decreases.
2
Heat flows spontaneously from hot to cold, and entropy increases.
3
Heat flows spontaneously from cold to hot, and entropy increases.
4
Heat flows spontaneously from cold to hot, and entropy decreases.
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