NEET Physics Question - Thermal Physics - Heat Transfer

Assertion (A): Conduction usually takes place in solids, convection in liquids and gases and no medium is required for radiation.

Reason (R): In conduction and convection, heat is transferred from one place to other by actual motion of heated material.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Assertion (A) correctly describes the primary media for each mode of heat transfer: conduction in solids, convection in fluids (liquids and gases), and radiation requiring no medium. So, (A) is true. Reason (R) is false because in conduction (especially in solids), heat is transferred by molecular vibrations and collisions, not by the actual bulk motion of heated material. Bulk motion is characteristic of convection.

Rankers Physics

Modes of Heat Transfer

Solution:

Leave a Reply Cancel reply