Question

Earth's mean temperature can be assumed to be 280k .how will the curve of blackbody radiation look like for this temperature?find out lambada ^max .in which part of electromagnetic spect6,where does this value lies ?​

Answer 1

Given that,

Temperature = 2800 K

Wien's displacement law :

Wien's displacement law is equal to the multiplication of wavelength and temperature.

In mathematically,

$b=\lambda T$

We need to calculate the maximum wavelength

Using Wien's displacement law  

$\lambda=\dfrac{b}{T}$

Where,

b = Wien's constant

T = temperature

Put the value into the formula

$\lambda =\dfrac{2.88\times10^{6}}{2800}$

$\lambda=1028.5\ nm$

Hence, The maximum wavelength is 1028.5 nm.