Multiple choice technology

What are the modern version available?

  1. visible

  2. ultraviolet

  3. infrared

  4. all the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Modern LED technology is available across multiple wavelength ranges, not just visible light. While visible LEDs are most common, infrared LEDs are used in remote controls and night vision applications, and ultraviolet LEDs are used in sterilization and medical devices. Therefore, all the listed options are correct types of modern LEDs.

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