CUET · PHYSICS · PYQ PAPER 2023
The device that regulates change in intensity of illumination into change in electric current is :
- A LED
- B Zener diode
- C Photodiode
- D Transistor
Answer & Solution
Correct Answer
(C) Photodiode
Step-by-step Solution
Detailed explanation
A photodiode is a semiconductor device that operates in reverse bias and converts light energy (photons) into electrical energy. When light of sufficient energy strikes the junction, it creates electron-hole pairs, causing the reverse saturation current to change in direct…
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