Subtopic: Wien displacement law and blackbody radiation
Question Statement:
According to Wien's Displacement Law, the wavelength $\lambda_{\max}$ at which maximum spectral emissive power occurs is related to absolute temperature $T$ by:
Options:
(A) $\lambda_{\max} T = 2898\;\mu\text{m}\cdot\text{K} = \text{constant}$
(B) $\lambda_{\max} / T = \text{constant}$
(C) $\lambda_{\max} T^4 = \text{constant}$
(D) $\lambda_{\max} = \sigma T^2$
Answer Key:
A
Step-by-Step Solution & Explanation
Wien's displacement law states that the peak emission wavelength shifts inversely with absolute temperature: $\lambda_{\max} T = C \approx 2.898 \times 10^{-3}\text{ m}\cdot\text{K} = 2898\;\mu\text{m}\cdot\text{K}$.