Ophthalmic Assistant

Category - Patient Services and Education

What is the wavelength of visible light?
  1. 100 to 300 nanometers
  2. 400 to 750 nanometers
  3. 200 to 600 nanometers
  4. 1000 to 1200 nanometers
Explanation
Answer: B - 400 to 750 nanometers

The wavelength of visible light is 400 to 750 nanometers. In comparison, the wavelength of x-rays is 0.01 nanometers to 10 nanometers.
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