In an unbiased n-p junction electrons diffuse from n-region to p-region because :

Question:
In an unbiased $\mathrm{n}$ – $\mathrm{p}$ junction electrons diffuse from $\mathrm{n}$-region to $\mathrm{p}$-region because :

holes in p-region attract them
electrons travel across the junction due to potential difference
only electrons move from $\mathrm{n}$ to $\mathrm{p}$ region and not the vice-versa
electron concentration in $\mathrm{n}$-region is more compared to that in p-region

Correct Option: 4

JEE Main Previous Year 1 Question of JEE Main from Physics Semiconductor Electronics : Materials, Devices and Simple Circuits chapter.

JEE Main Previous Year Online April 10, 2015

Solution: