Question

A black body radiates heat at temperatures `T_(1)` and `T_(2) (T_(2) gt T_(1)` the frequency corresponding to maxium energy is
A. more at`T_(1)`
B. more at `T_(2)`
C. equal for `T_(1)` and `T_(2)`
D. independent of `T_(1)` and `T_(2)`

Answer 1

Correct Answer - b
Energy radiated by the bodies are
`E_(1)= sigmaAT_(1)^(4)` and `E_(2)=sigmaAT_(2)^(4)`
`rarr (E_(2))/(E_(1))=(T_(2))/(T_(1))^(4) gt1`
or `h v_(2) gt h v_(1) or v_(2) gt v_(2)`
thus frequency corresponding to `T_(2)` is more