Figure shows angle of deviation versus angle of incidence curve for a Prism after refraction from two surfaces.The refractive index of the Prism will be :

(a) Plot a graph for angle of deviation as a function of angle of incidence for a triangular prism. (b) Derive the relation for the refractive index of the prism in terms of the angle of minimum deviation and angle of prism.

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

An isosceles prism of angle A=30^(@) has one of its surfaces silvered. Light rays falling at an angle of incidence 60^(@) on the other surface retrace their path after reflection from the silvered surface. The refractive index of prism material is

The curve of angle of incidence versus angle of deviaton wshown has been plotted for prism. Q. The value of refractive index of the prism used is

The angle of minimum deviation for an incident ligt ray on an equillateral prism is equal to its refracting angle. The refractive index of its material is

A ray is ihncident at an angle of incidence ii on one surface of a prism of small angle A and emerge normally from opposite surface. If the refractive index of the material of prism is mu. the angel of incidance I is nearly equal to

The least angle of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of the prism is

The least angle of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of the prism is

In an isosceles prism of angle 45^@ , it is found that when the angle of incidence is same as the prism angle, the emergen ray grazes the emergent surface. Find the refractive index of the material of the prism. For what angle of incidenc, the angle of deviation will be minimum?

For a prism kept in air, it is found that for an angle of incidence 60^(@) , the angle of refraction A, angle of deviation delta and anble of emergence e become equal. Then, the refractive index of the prism is