1.
A black body is at a temperature of 2880 K2880\,\text{K}. The energy of radiation emitted by this object with wavelength between 499 nm499\,\text{nm} and 500 nm500\,\text{nm} is u1u_1, between 999 nm999\,\text{nm} and 1000 nm1000\,\text{nm} is u2u_2, and between 1499 nm1499\,\text{nm} and 1500 nm1500\,\text{nm} is u3u_3. Wien's constant is b=0.28 cm Kb = 0.28\,\text{cm}\,\text{K}. The correct alternative is