MHT CET Physics question

Not in JEE Advanced syllabus

In p-n junction diode, holes diffuse from p-region to n-region, because

(A)the free electrons in the n-region attract them.
(B)they are swept across the junction by potential difference
(C)there is a greater concentration of holes in p-region as compared to n-region.Correct
(D)there is great concentration of electrons in p-region as compared to n-region.

Answer: (C)

Solution

Diffusion is caused by a concentration gradient: holes are plentiful in the p-region and scarce in the n-region;

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Question ID VK-085154