Which one of the following statements is WRONG regarding LED? (a) LEDs are energy efficient (b) LEDs have long time if properly manufactured. (c) Brightness of light emitted by LED cannot be controlled. (d) Colours produced by LED do not fade out.

Answer: (c). LEDs are energy efficient, long lasting and their colours do not fade: (a), (b), (d) are true. Brightness can be controlled by changing the forward current. So the wrong statement is (c).

Which one of the following statements is WRONG regarding LED? | MHT CET 2023 (12 May, Shift 2)

Q40MHT CET 2023 · 12 MAY · SHIFT 2Easy

Special Purpose Diodes

Which one of the following statements is WRONG regarding LED?

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Answer: (c)

LEDs are energy efficient, long lasting and their colours do not fade: (a), (b), (d) are true.
Brightness can be controlled by changing the forward current.
So the wrong statement is (c).

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