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The light-emitting diode (LED) is made of

This question was previously asked in
OPSC OAS 2023 Prelims (General Studies) Official Paper-I
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  1. Si
  2. Ge
  3. GaN
  4. Tungsten

Answer (Detailed Solution Below)

Option 3 : GaN
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Detailed Solution

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The Correct answer is Option 3. 

Key Points

Light-Emitting Diodes (LEDs):

  • LEDs are semiconductor devices that emit light when an electric current passes through them.
  • The most commonly used materials for manufacturing LEDs include Gallium Nitride (GaN), which is used for blue and white LEDs, and other compounds like Gallium Arsenide (GaAs) for infrared LEDs.

Thus, the correct answer is Option 3: GaN (Gallium Nitride).

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