Physics-
General
Easy

Question

Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of incidence must be greater than

  1. 30 to the power of ring operator  
  2. 60 to the power of ring operator
  3. 45 to the power of ring operator
  4. 90 to the power of ring operator

The correct answer is: 30 to the power of ring operator

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