Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-fact-Hard-Class 12
What happens to the barrier height of a p-n junction diode under forward bias when the applied voltage is significantly increased?
A
The barrier height is reduced, allowing more charge carriers to cross the junction.
B
The barrier height increases, restricting the flow of carriers.
C
The barrier height remains constant regardless of the voltage applied.
D
The depletion layer width increases, causing less current flow.
Correct Answer
Option A
Detailed Explanation
Under forward bias, as the applied voltage increases, the barrier height is reduced, which allows more charge carriers to have the energy required to cross the junction, resulting in increased current flow.
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