Determine the critical angle for a glass-air surface, if a ray of light which is incident in air on the surface is deviated through `15^@` when its angle of incidence is `45^@`

Calculate the critical angle for a glass-air surface,if a ray of light which is incident in air on the surface is deviated through 15^@ ,when its angle of incidence is 40^@ .

What is the angle of reflection when a ray of light is incident normally to the mirror?

What is the angle of reflection, when a ray of light is incident normally on a plane mirror?

The photoelectric emission from a surface starts only when the light incident upon the surface has certain minimum:

The critical angle of light passing from glass to air is minimum for

The refractig angle of a prism is A and the refractive index of its material is mu .When a ray of light is incident on the face AB of the prism,after refraction through the prism,the ray of light just grazes along the face AC as shown in Fig.3.21. Determine the value of the angle of incidence in terms of A and mu .

A right angled isosceles glass prism is made from glass of refractive index 1.5.Show that a ray of light incident normally on the hypotneuse of this prism is deviated through 180^@ .