JAMB Physics 2013 Question 32

Question 32

Refraction of Light

Total internal reflection will not occur when light travels from

  1. A.water to air.
  2. B.water into glass.
  3. C.glass to air.
  4. D.glass into water.
Show the answer and explanation

Answer: B (water into glass.)

Explanation

Total internal reflection can only happen when light goes from a denser to a less dense medium. Water into glass is less dense to denser, so it cannot occur.