equal number of holes and electrons exist, making the region neutral
(c)
recombination of holes and electrons has taken place
(d)
immobile charged ions exist
Choose the correct option:
1. (a), (b)
2. (a), (b), (d)
3. (c), (d)
4. All options are correct
(4) Hint: Depletion zone is formed due to diffusion of e from n to p side.
The space-charge regions on both the sides of the p-n junction which has immobile ions and entirely lacking of any charge carriers will form a region called the depletion region of a diode. The number of ionized acceptors on the p-side equals the number of ionized donors on the n-side.