A photo diode can be used:
Correct answer: C. Both (a) and (b)
- A. For detection of visible light
- B. For detection of invisible light
- C. Both (a) and (b)
- D. As an inductor
Explanation
Photodiodes are a class of diodes that converts light energy to electricity. Their working is exactly the opposite of LEDs which are also diodes but they convert electricity to light energy. Photodiodes can also be used in detecting the brightness of the light which is why are used to detect both visible and invisible light.
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