Kirchoff's law is applicable to________________?
Correct answer: C. Both A. and B.
- A. Monochromatic radiation only
- B. Total radiation only
- C. Both A. and B.
- D. Only volumes and not to surfaces
Explanation
Kirchhoff’s law relates emissive power and absorptivity and can be stated for both wavelength-specific radiation and total radiation. Therefore, both monochromatic and total forms are covered.
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