A hollow cube `A` of very small thickness at temperature `T` emits radiation like a black body.
Channel: Doubtnut
Date: 2020-01-26

A hollow cube `A` of very small thickness at temperature `T` emits radiation like a black body. The cube `A` is kept in a room of temperatue `T_(0)(ltT)`. The side of cube is doubled without changing the volume of material and its temperature. Find the ratio of rate of cooling of cube `A` in first case to that of second case.