Question

Statement 1: Radiation is the transfer of heat by electromagnetic waves.

Statement 2: When heat is radiated from a hot source, the amount of heat received by the body depends on the nature of the body.

(a) True, False

(b) True, True

(c) False, False

(d) False, True

The question was asked during an interview.

The above asked question is from Unit Operations in chapter Heat Transfer by Conduction, Convection and Radiation of Food Engineering

Answer 1

Right option is (b) True, True

For explanation: Radiation is the transfer of heat by electromagnetic waves. When heat is radiated from a hot source, the amount of heat received by the body depends on the nature of the body. E.g. A black body will absorb more energy than any other body from the same source which is exposed to both the bodies in the same manner.