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Which of the following statements about LED is INCORRECT?

Which of the following statements about LED is INCORRECT? Correct Answer It uses materials like silicon and germanium.

Light Emitting Diode (LED):

  • A Light Emitting Diode (LED) is a semiconductor unit that emits light when an electrical current flows through it.
  • Light is produced when the particles that carry the charge (known as electrons and holes) combine together within the semiconductor material. 
  • It uses materials like gallium and arsenide.
  • Since light is generated within the solid semiconductor material, LEDs are described as solid-state devices.
  • LEDs are utilized in applications as diverse as aviation lighting, automotive headlamps, advertising, general lighting, traffic signals, camera flashes, lighted wallpaper, horticultural grow lights, and medical devices.​
  • It needs small power for operation.

Related Questions

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