Question

black object radiate more heat than white objects. give two daily uses of principle

Answer 1

We wear white coloured or light coloured clothes in summer as they absorb less radiant heat and keep our body cooler

Electric room heater are provided with a polished metal surface behind the heating element .This surface reflects almost all the radiant heat from the heating element that falls on it and makes room heater more effective

Answer 2

All objects with a temperature above absolute zero (0 K, -273.15 oC) emit energy in the form of electromagnetic radiation. A blackbody is a theoretical or model body which absorbs all radiation falling on it, reflecting or transmitting none.