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Answer: Advantages of LEDs (any four):

  1. Low operating voltage and low power consumption.
  2. High efficiency: most of the energy is converted into light, with very little heat.
  3. Long life and rugged, as there is no filament to burn out.
  4. Fast switching (on–off) action, of the order of nanoseconds.
  5. Small size and light weight.
  6. Available in different colours (and white); the colour can be controlled by the semiconductor material.
Doubtly AI · 28 Oct 2026 AI-verified · Oct 2026 Report
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