The area of a hole of heat furnace is `10^(-4)m^(2)`. It radiates `1.58xx10^(5)` calories of
Channel: Doubtnut
Date: 2020-08-23

The area of a hole of heat furnace is `10^(-4)m^(2)`. It radiates `1.58xx10^(5)` calories of heat per hour. If the emissivity of the furnace is 0.80, then its temperature is