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UPSC Prelims 1989Question 6Science & Technology

Total internal reflection occurs when light travels from

Options

  1. (a)A rarer medium to a denser medium.
  2. (b)A denser medium to a rarer medium.
  3. (c)A rarer medium to a denser medium and the angle of incidence is less than the critical angle.
  4. (d)A rarer medium to a denser medium and the angle of incidence is greater than the critical angle.

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