Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Medium-Class 12
In a semiconductor under forward bias, how does the effective barrier height change if the applied voltage V is increased significantly?
A
The barrier height decreases, allowing more carriers to cross.
B
The barrier height increases, reducing the number of carriers crossing.
C
The barrier height remains constant, with no change in carrier crossing.
D
The barrier height fluctuates randomly, affecting carrier crossing unpredictably.
Correct Answer
Option A
Detailed Explanation
As per the NCERT context, increasing the applied voltage reduces the barrier height, allowing more carriers to cross the junction, thus increasing the current.
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