Question

Explain how unpolarized light is transformed into polarized light. And explain how sunglasses relate to this.

Answer 1

unpolarized light has vibrations in all direction while a polarized light has has vibrations in a particular direction only.

to convert an unpolarized light into polarized light , one needs to pass the light through a polarizer, a polarizer make sure to confine the vibrations of light in a particular direction and block all other vibrations, hence the light we get after passing through the polarizer is polarized and is vibrating in a particular direction parallel to the plane of polarizer