A monochromatic beam of light is incident at `60^@` on one face of an equilateral prism of refractive inder `n` and emerges from the opposite face making an angle `theta` with the normal. For `n = sqrt(3)`, the value of `theta` is `60^@ and (d theta)/(dn) = m`. The value of `m` is.

A monochromatic beam of light is incided at 60^(@) in one face of an equilateral prism of refractive index n and emerges from the opposite face making an angle theta(n) with the normal (see the figure). For n=sqrt3 the value of theta is 60^(@) and d(theta)/(dn)=m . The value of m is

A beam of monochromatic light is incident at i= 50^(@) on one face of an equilateral prism, the angle of emergence is 40^(@) , then the angle of minimum deviation is :

A beam of monochromatic light is incident at i= 50^(@) on one face of an equilateral prism, the angle of emergence is 40^(@) , then the angle of minimum deviation is :

A beam of monochromatic light is incident at i= 50^(@) on one face of an equilateral prism, the angle of emergence is 40^(@) , then the angle of minimum deviation is :

A ray of light incident on one face of an equilateral prism at 60^@ enters and leaves prism symmetrically. Refractive index of prism material is