P-N Junction Diode question from MHT CET 2026 (13 May, Shift 2)

Answer: (a)

1. Forward bias: the p-side (arrow end, anode) is at a higher potential than the n-side (bar end, cathode).
2. (a) anode $+2\ \text{V}$, cathode side $-2\ \text{V}$: forward. (b) $2\ \text{V} < 4\ \text{V}$: reverse.
3. (c) $-3\ \text{V} = -3\ \text{V}$: no bias. (d) $-2\ \text{V} < +2\ \text{V}$: reverse.
4. So the answer is (a).