NEET Physics Question - Thermal Physics - Heat Transfer

Assertion (A): When temperature difference across the two sides of a wall is increased, its thermal conductivity increases.

Reason (R): Thermal conductivity depends upon the temperature difference across the two sides of a wall.

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:

Thermal conductivity is an intrinsic property of the material and does not depend on temperature difference. It depends on the material itself and its temperature. Both assertion (A) and reason (R) are incorrect statements. Hence, option (4) is correct.

Rankers Physics

Thermal Conductivity and Temperature Difference

Solution:

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