Question

Question 3 (d)
Fill in the blanks :
(d) No medium is required for transfer of heat by the process of ___.

Answer 1

Exchange of heat energy between objects can take place through any of three modes: conduction, convection and radiation. Heat transfer through the process of radiation does not require a medium. The heat from the sun is transferred to earth through the process of radiation.

Heating food in a microwave and warming hand in the campfire are other examples of heat transfer through radiation.