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A thin prism of angle 5 ° is placed at a distance of 10 cm from the object. The distance of the image from the object is (given μ of prism = 1.5 )

Options

  1. Aπ 8   cm
  2. Bπ 12   cm
  3. C5π 36 cm
  4. Dπ 7   cm

Correct answer

C. 5π 36 cm

Step-by-step solution

δ = μ -1 A δ = 1.5 -1 × 5 ° = 2.5° = 2.5 × π 1 8 0 = π 72 δ≈tan δ = d 10 π 72 = d 10 ⇒ d = 5 π 36   cm

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