What is the small index of refractive of the material of a right angled prism with equal sides for which a ray of light entering one of the sides normally will be totally reflected ?

A ray of light is incident on the hypotenuse of a right-angled prism after travelling parallel to the base inside the prism. If mu is the refractive index of the material of the prism, the maximum value of the base angle for which light is totally reflected from the hypotenuse is

A ray of light is incident on the hypotenuse of a right angled prism after travelling parallel to the base inside the prism. If mu is the refractive index of the material of the prism, the maximum value of the base angle for which light is totally reflected from the hypotenuse is

A ray of light is incident on the hypotenuse of a right-angled prism after travelling parallel to the base inside the prism. If mu is the refractive index of the material of the prism, the maximum value of the base angle for which light is totally reflected from the hypotenuse is

What will be the angel of deviation of a ray of light incident normally on any smaller side of a total reflecting prism?

The refractive index of a material of a prism of angles 45^(@)-45^(@)-90^(@) is 1.5. The path of the ray of light incident normally on the hypotenuse side is shown in