Polarization| Polarized Light|Unpolarized Light

The degree of polarization of partially polarized light is P = 0.25 . Find the ratio of intensities of the polarized component of this light and the natural component.

What is an unpolarized light ? Explian with the help of suitable ray diagram how an unpolarized light can be polarized by reflection from a transparent medium. Write expression for Brewster's angle.

An unpolarizing beam of light is incident on a group of four palarizing sheets, which are arranaged in such a way that the characteristic direction of each polarizing sheet makes an angle of 30^(@) with that of the preceding sheet. What fraction of incident unpolarized light is transmitted ?

Ordinary light is converted into plane polarized light by passing through a ________.