Light rays are incident on an opaque sheet. Then they:

Light is incident on a plane glass sheet at an angle of 70^@ . Find the refractive index of glass sheet if the reflected and refracted rays are perpendicular to each other.

Unpolarized light is incident on a plane sheet on water surface. The angle of incidence for which the reflected and refracted rays are perpendicular to each other is ( mu of water = 4/3 )

Draw the incident ray and the reflected ray. if a light ray is incident on a plane mirror with the angle of incidence 30^@ .

Unpolarized light is incident on a plane sheet of water surface. The angle of incidence for which the reflected and refracted rays are perpendicular to each other is ( mu of water =4/3 )

When rays of light are incident on a glass slab, then the incident ray and emergent ray are ____ to each other.

A light ray is incident on a smooth reflecting surface making an angle of incidence 2i. If the angle of incidence is doubled, then the deviation of the light ray is equal to ______ .