Question

In which of the following radiation is the mode of heat transfer?

• A. Ice cooling down your hand
• B. Hot air rising
• C. Heat from the sun warming your face
• D. none of these

Answer 1

The correct option is C Heat from the sun warming your face

Heat from the sun warming your face $\Rightarrow$ radiation

Radiation - transfer of heat in form of radiant energy or wave motion from one body to other. No medium is required. Sun's heat wave comes from space where there is no medium.