NEET Physics Question - Thermal Physics - Heat Transfer

Assertion (A): High thermal conductivity of metals is due to presence of free electrons.

Reason (R): Electrons at same temperature have very high average velocity than atoms.

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) is true, free electrons are primary carriers of heat in metals. Reason (R) is true;

Electrons have higher velocity due to smaller mass at same kinetic energy. This high velocity enables efficient heat transfer, explaining (A). Both are true and (R) explains (A).

Rankers Physics

Thermal Conductivity of Metals

Solution:

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