I - V characteristics of LED is shown correctly by graph (a) d (b) b (c) a (d) c

Answer: (b). An LED works only in forward bias, so its graph is drawn in the first quadrant. Current is almost zero until the threshold voltage, then rises sharply (exponentially). Graph (b) shows this shape; graph (a) includes a breakdown branch, (c) is a solar cell, (d) saturates. So the answer is (b).

I - V characteristics of LED is shown correctly by graph | MHT CET 2025 (23 Apr, Shift 2)

Q18MHT CET 2025 · 23 APR · SHIFT 2Easy

Special Purpose Diodes

$\text{I} - \text{V}$ characteristics of LED is shown correctly by graph

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Answer: (b)

An LED works only in forward bias, so its graph is drawn in the first quadrant.
Current is almost zero until the threshold voltage, then rises sharply (exponentially).
Graph (b) shows this shape; graph (a) includes a breakdown branch, (c) is a solar cell, (d) saturates.
So the answer is (b).

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