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  4. Solar radiation emitted by sun resembles that emitted by a black body at a temperature of 6000 text K . Maximum intensity is emitted at a wavelength of about 4800 mathringA . If the sun were to cool down from 6000 text K to 3000 text K , then the peak intensity would occur at a wavelength

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Q. Solar radiation emitted by sun resembles that emitted by a black body at a temperature of $6000\text{ K}$ . Maximum intensity is emitted at a wavelength of about $4800 \mathring{A} $ . If the sun were to cool down from $6000\text{ K}$ to $3000\text{ K}$ , then the peak intensity would occur at a wavelength

NTA AbhyasNTA Abhyas 2020Thermal Properties of Matter

Solution:

We know that
$\frac{\lambda _{m_{2}}}{\lambda _{m_{1}}}=\frac{T_{1}}{T_{2}}$
$\Rightarrow \lambda _{m_{2}}=9600 \, \mathring{A} $