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KVPY2014PhysicsRay Optics

The angle of a prism is 60^ . When light is incident at an angle of 60^ on the prism, the angle of emergence is 40^ . The angle of incidence i for which the light ray will deviate the least is such that

Options

  1. Ai < 40^
  2. B40^ < i < 50^
  3. C50^ < i < 60^
  4. Di >60^

Correct answer

B. 40^ < i < 50^

Step-by-step solution

For min deviatom i=e array l r₁=r₂= A 2 r₁=r₂=30^ array For minimum devation i should lie between 40 to 50^

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