Question

Identify the electromagnetic wave which is also known as heatwaves.

(a) Radio Waves

(b) Gamma Waves

(c) X-Rays

(d) Infrared Waves

The question was posed to me during a job interview.

My question is from Electromagnetic Spectrum in section Electromagnetic Waves of Physics – Class 12

Answer 1

Correct option is (d) Infrared Waves

For explanation: Infrared waves are heat radiations also known as heatwaves. These waves are produced by hot bodies and molecules. They do heating because water molecules present in most of the materials readily absorb infrared waves and their thermal motion increases, so they heat themselves and also heat their surroundings.