A black body is at a temperature of 5760 K. The energy of radiation emitted by the body at wavelength 250 nm is ${\mathrm{U}}_1$, at wavelength 500 nm is ${\mathrm{U}}_2$ and that at 1000 nm is ${\mathrm{U}}_3$. Wien's constant, b = 2.88 x ${10}^6$ nmK. Which of the following is correct?

 

 

• A

  ${\mathrm{U}}_1 = 0$

• B

  ${\mathrm{U}}_2 = 0$

• C

  ${\mathrm{U}}_1 >\hspace{0.17em}{\mathrm{U}}_2$

• D

  ${\mathrm{U}}_2 > {\mathrm{U}}_1$