Heat transfer MCQ with Answers

According to Kirchhoff's law, the ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body.

An object that absorbs all radiation falling on it, at all wavelengths, is called a black body. All radiations in a black body are absorbed.

According to Kirchhoff's law, the ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body.

The concept of overall coefficient of heat transfer is used in heat transfer problems of conduction and convection heat transfer.