In an unbiased p-n junction, holes diffuse from the p-region ton-region because
(a) free electron 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 the above.

Options

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 the above.

Answer

c