Multiple choice

The phenomenon of total internal reflection may occur when light is passing from

  1. air to glass

  2. air to water

  3. air to oil

  4. glass to air
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Total internal reflection occurs only when light travels from a medium with a higher refractive index to one with a lower refractive index. Glass has a higher refractive index than air.

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