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The minimum angle of deviation of a prism of refractive index 1.732  is equal to its refracting angle. What is the angle of prism?

  1. 45 to the power of 0
  2. 30 to the power of 0
  3. 60 to the power of 0
  4. 40 to the power of 0

The correct answer is: 60 to the power of 0

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