Rankers Physics

Refraction by Prism: Practice Problem & Solution

A thin Prism P1 with angle 4° and made from glass of refractive index 1.54 is combined with another thin Prism P2 made from glass of refractive index 1.72 to produce dispersion without deviation. The angle of Prism P2 is
5.33°
4°
3°
2.6°

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1. For a prism of refracting angle A and refractive index 2. Assume rays are incident at all angles of incidence 0° ≤ i ≤ 90°. Ignore partial reflection.
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4. A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is m, then the angle of incidence is nearly equal to : (2020)
5. Assertion (A): When a glass prism is immersed in water, the deviation caused by prism decrease. Reason (R): Refractive index of glass prism relative to water is less than relative to air.