Q. With reference to light-emitting diodes (LEDs), consider the following statements;
1.It is a semiconductor device that emits infrared or visible light when charged with an electric current.
2.Cost-efficient and bright light-emitting diodes (LEDs) are commonly desired for general light sources.
Which of the statements given above is/are correct?;

[A] 1 only

[B] .2 only

[C] Both 1 and 2

[D] .Neither 1 nor 2

Answer: C
Notes:

Statement 1 is correct: It is a semiconductor device that emits infrared or visible light when charged with an electric current.

Statement 2 is correct: Cost-efficient and bright light-emitting diodes (LEDs) are commonly desired for general light sources.

Source: New materials developed can help move towards stable LEDs emitting bright light

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