The temperature of a piece of iron is  `27^(@)C`  and it is radiating energy at the rate of `
Channel: Doubtnut
Date: 08/11/2021

The temperature of a piece of iron is  `27^(@)C`  and it is radiating energy at the rate of `Q kWm^(-2)` . If its temperature is raised to `151^(@)C` , the rate of radiation of energy will become approximately