MCQ
A hot body will radiate heat most rapidly if its surface is
- AWhite & polished
- BWhite & rough
- CBlack & polished
- ✓Black & rough
✓
Answer
Correct option: D.
Black & rough
d
(d)Black and rough surfaces are good absorber that’s why they emit well. (Kirchoff's law).
(d)Black and rough surfaces are good absorber that’s why they emit well. (Kirchoff's law).
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