Engineering Board Exam Reviewer · Physics · medium

What is the critical angle for light traveling from glass (n = 1.5) to air?

  1. 33.69°
  2. 48.19°
  3. 41.81°
  4. 90.00°

Answer

C. 41.81°

Solution

c = n2/n1 = 1/1.5 c = 41.81°.

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