A black body is at a temperature of 5760 K. The energy of radiation emitted by the body at wavelength 250 nm is U₁, at wavelength 500 nm is U₂ and that at 1000 nm is U₃. Wien’s constant, b = 2.88×10⁶ nmK. Which of the following is correct?

U₂ > U₁

According to Wien's displacement law

λ_min = \(\frac{b}{T}\) = \(\frac{2.88 × 10^6}{5760}\) = 500 nm

From the graph we can see that U₂ is maximum.