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If A is the angle of prism, r angle of refraction, then the condition for minimum deviation is

Options

  1. AA=r²
  2. BA=2 r
  3. CA= r 2
  4. DA=r

Correct answer

B. A=2 r

Step-by-step solution

For refraction through prism, A=r₁+r₂ For the case of minimum deviation, aligned & & r₁ &=r₂=r & & A &=r+r=2 r aligned

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