The ratio of total radiating power to the absorptivity of the body depends upon the _____________ as per Kirchoff‟s law?
Correct answer: B. Temperature of the body
- A. Wavelength of radiation
- B. Temperature of the body
- C. Nature of the body
- D. None of these
Explanation
Kirchhoff’s law gives E/α = Eb, where Eb is the blackbody emissive power at the body’s temperature. Therefore, for total radiation, the ratio depends on temperature, not on the nature of the body.
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