Q. In an unbiased $p - n$ junction, holes diffuse from $p$-region to $n$-region, because
A) Free electrons in the $n$-region attract them
B) They move across the junction by the potential difference
C) Hole concentration in $p$-region is more as compared to $n$-region
D) All of the above
Explanation
The correct answer is Option C: Hole concentration in $p$-region is more as compared to $n$-region.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.