In figure, light refracts from material 1 into a thin layer of material 2, crosses that layer, and then is incident at the critical angle on the interface between materials 2 and 3.

(a) What is the angle `theta`?
(b) If `theta` is decreased, is there refraction of light into material 3 ?

What is critical angle for a material of refractive index sqrt(2) ?

Find the value of critical angle for a material of refractive index sqrt(3) .

A prism can have a maximum refracting angle of (theta_C= critical angle for the material of prism )

Give three examples of materials that refract light rays. What happens to the speed of light rays when they enter these materials?

A thin prism of refracting angle 2^@ deviates an incident ray through an angle of 1^@ .Find the value of refractive index of material of prism.

The refractive angle of a prism is 60^(@) . What is the angle of minimum deviation, if the refractive index of the material of the prism is sqrt2 ?

A ray of monochromatic light is incident on one refracting face of a prism of angle 75^(@) . It passes thorugh the prism and is incident on the other face at the critical angle. If the refractive index of the material of the prism is sqrt(2) , the angle of incidence on the first face of the prism is

A ray of monochromatic light is incident on one refracting face of a prism of angle 75^(@) . It passes through the prism and is incident on the other face at the critical angle. If the refractive index of the material of the prism is sqrt(2) , the angle of incidence on the first face of the prism is