Question

(b) ... of heat does not require
a medium.
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Answer 1

Hlo mate here is ur ans....

From the sun the heat comes to us by another process known as radiation. The transfer of heat by radiation does not require any medium...

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Answer 2

Answer:

Radiation

Explanation:

There are three modes by which energy transfer they are Conduction Convection Radiation.

Radiation:

It is energy given off by matter in the form of rays. this travels through space and can penetrate into any medium.

For example:

Consider the burning of vessel on the stove the energy that transfer from the burner of the stove to the bottom of the vessel is called radiation.