Figure shows graph of deviation d versus angle of incidence for a light ray striking a prism. Angle of prism is :

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.

Two thin prisms of flint glass, with refracting angles of 6° and 8° respectively, possess dispersive powers in the ratio :

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

The refractive index of a prism for a monochromatic wave is √2 and its refracting angle is 60°. For minimum deviation, the angle of incidence will be :

For two positions of a lens, the images are obtained on a fixed screen. If the size of object is 2 cm and the size of diminished image is 0.5cm, the size of the other image will be :

Light rays from a source are incident on a glass prism of index of refraction μ and angle of prism α. At near normal incidence, the angle of deviation of the emerging rays is

Variation of angle of deviation δ versus angle of incidence for a prism is given the figure. The value of refractive index of prism :