Solar radiation emitted by sun resembles that emitted by a ***** body at a temperature of 6000 K. Maximum intensity is emitted at a wavelength of about 4800 . If the sun were to cool down from 6000 K to 3000 K, then the peak intensity would occur at a wavelength
(a) 4800
(b) 9600
(c) 7200
(d) 6400
