A solid sphere cools at the rate of `2.8^(@)C` per minute, when its temperature is
Channel: Doubtnut
Date: 2020-06-14

A solid sphere cools at the rate of `2.8^(@)C` per minute, when its temperature is `127^(@)C`. Find the rate at which another solid copper sphere of twice the radius looses its temperature at `127^(@)C`, in both the cases, the room temperature is maintained at `27^(@)C` is