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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