The correct representation of wavelength intensity relationship of an ideal black body radiation at two different temperatures ${\mathrm{T}}_1$ and ${\mathrm{T}}_2$ is

The ideal body which emits and adsorbs radiations of all frequencies is called a black body and the radiation emitted by such a body is called black body radiation. The exact frequency distribution of the emitted radiation from black body depends only on its temperature. At a given temperature intensity of radiation emitted increases with decrease of wavelength, reaches a maximum value at a given wavelength and then starts decreasing with further decrease of wavelength.