Refraction Through a Prism
Important Questions on Refraction Through a Prism
The graph between angle of deviation and angle of incidence for a triangular prism is represented by

The refractive index for a prism is given as Then, angle of minimum deviation in terms of angle of the prism is

A ray incident on the refracting face is refracted in the prism as shown in the figure and emerges from the other refracting face as such that, . If the angle of prism and the refractive index of the material of prism is , then the angle of deviation of the ray is

If a thin prism of glass is dipped in water then minimum deviation (with respect to air) of light produced by prism will be

For a prism kept in air, it is found that for an angle of incidence , the angle of prism , angle of deviation and angle of emergence '' become equal. Then the refractive index of the prism is

Minimum deviation is observed with a prism having angle of prism , angle of deviation , angle of incidence and angle of emergence . We then have generally

A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and the latter is equal to of angle of prism. The angle of deviation is

If one face of prism is silvered having prism angle and . What will be the angle of incidence, so that the incident ray retraces its path?

When a glass prism of refracting angle is immersed in a liquid, its angle of minimum deviation is . The critical angle of glass with respect to the liquid medium is

Refractive index of a prism is and the angle of prism is The minimum angle of incidence of a ray that will be transmitted through the prism is

An equilateral prism produces a minimum deviation of . The angle of incidence is

The refractive index of a glass is for red light and for blue light. Let and be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then,

