A body takes 5 minutes to cool from `90^(@)C` to `60^(@)C` . If the temperature
Channel: Doubtnut
Date: 2020-08-30

A body takes 5 minutes to cool from `90^(@)C` to `60^(@)C` . If the temperature of the surroundings is `20^(@)C` , the time taken by it to cool from `60^(@)C`  to `30^(@)C` will be.