For a perfectly black body, the graph is plotted between the frequency of radiation with maximum intensity (v_ m ) and the absolute temperature ' T '. Out of the following which is the correct graph?

Step-by-step solution

According to Wein's displacement law _ m T = b = Wein constant If v_m is the frequency corresponding to wavelength _m , then ( c u _ m ) T = b or u _ m = c b T , i.e., u _ m T v_ m graph is linear w.r.t. temperature and the straingth line shown by line B . Thus, option (D) is true.