EAMCET Engineering 2004 Solved Paper

A black body of mass 34.38g and surface area 19.2cm2 is at an initial temperature of 400K. It is allowed to cool inside an evacuated enclosure kept at constant temperature 300K. The rate of cooling is 0.04∘C per second. The specific heat of the body in Jkg−1K−1 is (Stefan's constant σ=5.73×10−8Wm−2K−4