light through a prism : Angle of deviation

When white light passes through prism, the angle of deviation is

A ray of light passing through a prism of refraction angle 60^(@) has to deviate by atleast 30^(@) . Then, refractive index of prism should be

A ray of light passing through a prism of refracting angle 60^(@) has to deviate by at least 40^(@) . Then refractive index of prism should be

Draw the path of light ray passing through a prism. Label angle of incidence and angle of deviation in the ray diagram.

STATEMENT- 1 When white light passes through a prism,deviation of violet light is more than green light STATEMENT 2 In a prism average devaition is measured as deviation of yellow light.

A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and latter is equal to (3//4)^(th) the angle of prism. The angle of deviation is