📊 Heat Transfer
Q. According of Kirchhoff's law,
  • (A) radiant heat is proportional to fourth power of absolute temperature
  • (B) emissive power depends on temperature
  • (C) emissive power and absorptivity are constant for all bodies
  • (D) ratio of emissive power to absorptive power for all bodies is same and is equal to the emissive power of a perfectly black body.
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✅ Correct Answer: (D) ratio of emissive power to absorptive power for all bodies is same and is equal to the emissive power of a perfectly black body.

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