Which one of the following heat transfers is an example of convection ?
[amp_mcq option1=”Heating of food in a microwave oven” option2=”Boiling water in a pot on a gas stove” option3=”Feeling the warmth in sun” option4=”Heating a brass rod at one end and observing the temperature rise at the other end” correct=”option2″]
This question was previously asked in
UPSC CDS-2 – 2024
Boiling water in a pot on a gas stove is an example of heat transfer primarily by convection within the water.
Convection is the transfer of heat through the movement of a fluid (liquid or gas). In boiling water, heat from the stove is conducted through the pot to the water at the bottom. This heated water becomes less dense and rises, while cooler, denser water from the top sinks, creating circulating currents (convection currents) that distribute heat throughout the liquid.