Draw a labelled ray diagram to illustrate (a) critical angle (b) total internal reflection for a ray of light moving from one medium to another.

Ray of light bends as light travels from one medium to another.

Draw a neat labelled ray diagram to show total internal reflection of a ray of light incident normally on one face of a 30^(@),90^(@),60^(@) prism.

If the critical angle for total internal reflection, from a medium to vacuum is 30^(@) , then velocity of light in the medium is

Fill in the blanks: Q: Total internal reflection occurs only when a ray of light passes from a _____medium to a ____medium.

Draw a labelled ray diagram for the production of pure spectrum and explain.

Draw a simplified labelled diagram of a hot cathode ray tube.

The path of a ray of light passing through an equilateral glass prism ABC is shown in figure. The ray of light is incident on face BC at the critical angle for just total internal reflection. The total internal reflection. The total angle of deviation after the refraction at face AC is 108^@ . Calculate the refractive index of the glass.

Let the refractive index of a denser medium with respect to a rarer medium be n_(12) and its critical angle be theta_(c) . At an angle of incidence A when light is travelling from denser medium to rarer medium, a part of the light is reflected and the rest is refracted and the angle between reflected and refracted rays is 90^(@) , Angle A given by -

Let the refractive index of a denser medium with respect to a rarer medium be n_(12) and its critical angle be theta_(c) . At an angle of incidence A when light is travelling from denser medium to rarer medium, a part of the light is reflected and the rest is refracted and the angle between reflected and refracted rays is 90^(@) , Angle A given by -

A ray of light is incident from a denser to a rarer medium. The critical angle for total internal reflection is theta_(ic) and Brewster's angle of incidence is theta_(iB) such that (sintheta_(ic))/(sintheta_(iB))= eta=1.28 . The relative refractive index of the two media is