Question

If the forward voltage in a semiconductor is doubled, the width of depletion layer will

• A. become half
• B. become one-fourth
• C. remain unchanged
• D. become double

Answer 1

The correct option is A become half

P-N junction -

When P type semiconductor is mixed with N - type semiconductor, P-N junction formed

Wherein

There is very thin region (of the order of micro meter) called depution region.

width of depletion region $\propto \frac{1}{V}$

V=Applied potential

i.e. If V is doubled width of depletion region will become half.