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JAMB Physics 1980 Question 25

Question 25

Refraction of Light

Given that SQ = 10 cm and SP = 6 cm, the refractive index of the block of glass shown in the above figure is

Diagram for this question
  1. A.0.30
  2. B.0.60
  3. C.1.67
  4. D.2.33
  5. E.2.36
Show the answer and explanation

Answer: C (1.67)

Explanation

Refractive index = real depth ÷ apparent depth = SQ/SP = 10/6 ≈ 1.67.