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

a) |
b) |
c) |
d) |
None of these |

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

a) |
b) |
c) |
d) |
None of these |

1 Answer - 5876 Votes

3537

**(a)**

For a given prism, the angle of deviation depends upon the angel of incidence of the light rays falling on the prism

Taking triangle , we have

Since, is an equilateral triangle, therefore,

Hence, angle of deviation of the ray is