Given, temperature, T1=5760K Given that energy of radiation emitted by the body at wavelength 250nm in U1, at wavelength 500nm is U2 and that at 1000nm is U3. Now, according to Wein's law, we get λmT=b where, b= Wien's constant =2.88×106nmK ⇒λm=
b
T
⇒λm=
2.88×106nmk
5760K
⇒λm=500nm λm is the wavelength corresponding to maximum energy, so U2>U1. Given, temperature, T1=5760K Given that energy of radiation emitted by the body at wavelength 250nm in U1, at wavelength 500nm is U2 and that at 1000nm is U3. Now, according to Wein's law, we get λmT=b where, b= Wien's constant =2.88×106nmK ⇒λm=
b
T
⇒λm=
2.88×106nmk
5760K
⇒λm=500nm λm is the wavelength corresponding to maximum energy, so U2>U1.