The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?
Correct answer: B. α × 1/T
- A. αT
- B. α × 1/T
- C. α T4
- D. Independent of T
Explanation
Wien's displacement law states that the wavelength of maximum black-body emission is inversely proportional to absolute temperature: λmaxT = constant. Therefore, λmax = α/T.
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