Refraction At Plane Surface

The frequency of a light wave in a material is 2\times 10¹⁴ Hz and the wavelength is 5000 Å. The refractive index of the material will be:

1. 1.40

2. 1.50

3. 3.00

4. 1.33

An air bubble in a glass slab with a refractive index (near-normal incidence) is deep when viewed from one surface and deep when viewed from the opposite surface. The thickness (in ) of the slab is:

1.		2.
3.		4.

A light ray falls on a glass surface of refractive index , at an angle of The angle between the refracted and reflected rays would be:

1.		2.
3.		4.