Question
State Wien's law. Write the S.I. unit of Wien's constant.
✓
Answer
According to Wien's law, the wavelength $\lambda_\text{m}$ for which the emittance of a black body is maximum, is inversely proportional to its absolute temperature.$\lambda_\text{m}\text{T}=\text{constant}.$
This constant is written as b and has a value of 0.288cm K in the CGS units and
$2.88 \times 10^{-3} \mathrm{mK}$ in the S.I. units.
This constant is written as b and has a value of 0.288cm K in the CGS units and
$2.88 \times 10^{-3} \mathrm{mK}$ in the S.I. units.
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