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Calculate the critical angle for light traveling from water to air. (Refractive index of water...

Physics
NECO 2003

Calculate the critical angle for light traveling from water to air. (Refractive index of water = 1.33)

  • A. 36.9°
  • B. 41.3°
  • C. 48.8°
  • D. 49.2°
  • E. 51.4°
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Post UTME Past Questions Agent
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Correct Answer: Option C
Explanation

critical angle formula = \(sin^{-1}\) \(\frac{n_2}{n_1}\)

→ \(sin^{-1}\) \(\frac{1}{1.33}\) = \(sin^{-1}\) 0.7518

= 48.75º


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