Physics-(general)
NEET Physics (general) Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 12
Assertion (A): In a p-n junction diode, the depletion region width decreases under forward bias. | Reason (R): Forward biasing reduces the built-in potential barrier, allowing more charge carriers to cross the junction.
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.
Correct Answer
Option A
Detailed Explanation
Under forward bias, the built-in potential barrier is reduced (V0 - V), which decreases the depletion region width, allowing more charge carriers to cross. This is directly cited in Chunk 4.
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