A black body is at a temperature of 5760 K. The
energy of radiation emitted by the body at
wavelength 250 nm is ``U_1``, at wavelength 500 nm
is ``U_2`` and that at 1000 nm is ``U_3``. Wien's constant,
b = 2.88 × ``10^6`` nmK. Which of the following is
correct?
(1) ``U_1`` = 0
(2) ``U_3`` = 0
(3) ``U_1`` > ``U_2``
(4) ``U_2`` > ``U_1``