Physics-Resistance & Resistivity

NEET Physics Resistance & Resistivity Assertion Reason Question

Type: Assertion Reason-assertion-Medium-Class 12

Assertion (A): The resistivity of semiconductors decreases with a rise in temperature. | Reason (R): Adding impurities to semiconductors increases their resistivity.

A

Both A and R are true and R is the correct explanation of A.

B

Both A and R are true but R is not the correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Correct Answer

Option C

Detailed Explanation

The assertion is true as the resistivity of semiconductors decreases with temperature, while the reason is false because adding impurities decreases the resistivity, not increases.

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