A thin prism of `2^@` angle gives a deviation of `1^@`. What is the value of refractive index of the material of the prism?

A thin prism of 20^@ angle gives a deviation of 1^@ . What is the value of refractive index of the material of the prism?

A thin prism of 5^@ angle gives a deviation of 3.2^@ .What is the value of refractive index of teh material of the prism?

What is the value of refractive index of a medium of polarising angle 60^@ ?

A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be 40^@ . What is the refractive index of the material of the prism? The refracting angle of the prism is 60^@ . If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light.

Define the term dispersion by a prism and give the reason for its occurrence .Write the formula for refractive index of the material of a prism in terms of the anle ofminimum deviation.

Derive an expression for the anle of deviation of a small prism in terms of the refractive index and the angle of the prism.

At what angle should a ray of light be incident on the face of a prism of refracting angle 60^@ so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.

A ray is incident at an angle of incidence i on one surface of a prism of small angle A and emerges normally from the opposite surface. If the refractive index of the material of the prism is mu , the angle of incidence i is nearly equal to