In forward bias and in reverse bias, respectively, the width of the depletion layer of a p-n junction

decreases; increases

The correct answer is Option (1) → decreases; increases **

In a p–n junction:

• Under forward bias → the applied potential reduces the potential barrier.

→ Movement of charge carriers increases → depletion layer width decreases.

• Under reverse bias → the applied potential increases the potential barrier.

→ Movement of charge carriers decreases → depletion layer width increases.

Final Answer:

decreases; increases