The surface of a house hold radiator has an emissivity of 0.5 and an area of 1.5 `m^(2)`.
Channel: Doubtnut
Date: 2020-06-28

The surface of a house hold radiator has an emissivity of 0.5 and an area of 1.5 `m^(2)`. The rate at which the radiation is emitted by then the radiator when its temperature is `47^(@)C` will be nearly (`sigma=5.7xx10^(-8)` Si units)