Question

The coefficient of absorption of a body is equal to its coefficient of emission at a given temperature is called ______.

विकल्प

• Stefan’s law

• Newton’s law of cooling

• Kirchoff’s law of heat radiation

• Boyle’s law

Answer 1

The coefficient of absorption of a body is equal to its coefficient of emission at a given temperature is called Kirchoff’s law of heat radiation.

Explanation:

At thermal equilibrium, the absorptivity of a body is equal to its emissivity at a given wavelength and temperature.