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Consider the following statements: A. The junction area of solar cell is made very narrow compared to a photo diode. B. Solar cells are not connected with any external bias. C. LED is made of lightly doped p-n junction. D. Increase of forward current results in continuous increase of LED light intensity. E. LEDs have to be connected in forward bias for emission of light. Choose the correct answer from the options given below.

Asked in JEE Main 24th Jan 1st Shift 2025 · Photodiode and solar cell

Answer: (3) B, E only

Step-by-step solution

A: a solar cell has a large junction area to collect more light. False.

B: a solar cell generates its own emf and needs no external bias. True.

C: LEDs are heavily doped. False.

D: intensity rises with current up to a limit, then decreases. False.

E: an LED emits only in forward bias. True.

Why the other options are wrong

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