Let there be four articles having colours blue, red, black and white. When they are heated together and allowed to cool, which article cool at the earliest

Question

Dr. Abubacker · Accepted Answer

(b) According to Wien’s law
$T \propto \frac{1}{\lambda}$
Red colour has maximum wavelength, so its temperature will be minimum and hence, it will cool at the earliest

Q. Let there be four articles having colours blue, red, black and white. When they are heated together and allowed to cool, which article cool at the earliest

Explanation

Reviewed by Dr. Abubacker

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