Calculate the amount of heat radiated per second by a body of surface area `12cm^(2)` kept in
Channel: Doubtnut
Date: 2020-07-12

Calculate the amount of heat radiated per second by a body of surface area `12cm^(2)` kept in thermal equilibrium in a room at temperature `20^(@)C` The emissivity of the surface `=0.80` and `sigma=6.0xx10^(-s)Wm^(-2)K^(-4)` .