Give illustrative examples for total internal reflection.

Define critical angle for total internal reflection.

Give example of monera.

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

What is total internal reflection of light ? What are the two essential conditions for total internal reflection to take place ?

Can light travelling from air to water suffer total internal reflection?

Explain briefly the phenomenon of total internal reflection used in fibre optics.

At what angle should a ray of light be incident on the face of a prism of refracting angle 60^@ so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.