Under forward bias the depletion layer:
ATurns to metal
BDoubles in width
CGets narrower
DGets much wider
Answer & Solution
Correct answer: C. Gets narrower
1. The applied voltage opposes the built-in potential.
2. The barrier height falls.
3. So the depletion layer gets narrower.
_Source: NCERT Class 12 Physics Part II, Chapter 14, Semiconductor Electronics._
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