The refractive index of a medium relative to air is 1.8. Calculate to the nearest…

Physics WAEC 2002

The refractive index of a medium relative to air is 1.8. Calculate to the nearest degree, the critical angle for the medium

  • 68o
  • 56o
  • 34o checkmark
  • 18o

The correct answer is: C

Explanation

c = \(\sin^{-1} \frac{1}{n} = \sin^{-1} \frac{1}{1.8} = 34^o\)
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