Wavelength of radiation emitted by a body depends on the ________________ of its surface?
Correct answer: D. Temperature
- A. All 'A', 'B' & 'C'
- B. Area
- C. Nature
- D. Temperature
Explanation
For thermal radiation, the wavelength of maximum emission is fixed by the surface temperature according to Wien's displacement law. Surface area affects the total emitted energy, while surface nature mainly affects emissivity.
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