Physics - Heat & Thermo Question with Solution | TestHub

Heat is generated uniformly per unit volume inside a spherical volume of radius 1 m at rate of $21\mathrm{W}/{\mathrm{m}}^3$. The thermal conductivity of the spherical volume is $1\mathrm{W}/\mathrm{mK}$. If the outer surface temperature of the sphere is $20^{\circ }\mathrm{C}$. If the temperature of the center of the sphere is x (in degree centigrade) then find 2x.