Question

Fill in the blanks.

The amount of heat radiated by a black surface depends on its _______________.

Answer 1

1. All hot bodies emit radiant energy.
2. Black surfaces are good absorbers and also good radiators of radiant heat.
3. The amount of heat radiated by a body depends on its temperature.
4. Greater the temperature of the body, the greater will be the radiant energy emitted.

Thus, the amount of heat radiated by a black surface depends on its temperature.