Question

An object at a temperature of 400 K. At what wavelength (in nm) does this object radiate the most energy?

Answer 1

Wavelength can be calculated from WEIN'S DISPLACEMENT LAW:-

Which says:-

Wavelength (maxm) * Temperature= 2.893*10^-3

So maxm wavelength= (2.893*10^-3)/400 = 7.2325

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