A fan produces a feeling of comfort during the hot weather because
- Afan supplies cool air
- Bour body radiates more heat in air
- Cconductivity of air increases
- Dour perspiration evaporates rapidly
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (d) our perspiration evaporates rapidly
Explanation
A fan only circulates room air; it does not supply cooler air or change air conductivity.
The moving air speeds up evaporation of perspiration (sweat) from the skin.
Evaporation absorbs latent heat from the body, producing the cooling sensation.