Question

Earth’s mean temperature can be assumed to be 280 K. How will the curve of blackbody radiation look like for this temperature? Find out λ_max . In which part of the electromagnetic spectrum, does this value lie? (Take Wien’s constant b = 2.897 × 10^-3 m K)

Answer 1

Data : T = 280 K, Wien’s constant b = 2.897 × 10^-3 m.K

λ_maxT = b

This value lies in the infrared region of the electromagnetic spectrum. 

The nature of the curve of blackbody radiation will be the same as shown in above, but the maximum will occur at 1.035 × 10^-5 m.