What information does one obtain from the polarisation about nature of light?

What information does it gave?

What changes on polarisation of light?

Sketch a graph between frequency of incident radiations and stopping potential for a given photosensitive material. What information can be obtained from the value of the intercept of potential axis? A source of light of frequency of greater than the threshold freuency is placed at a distance of 1 m from the cathode of a photocell? the distnace of hte light sources from the cathode is reduced explain giving reasons, what change will you observe in the Stopping potential.

Fibre obtained from nature is-

What information do we get about the nature of light by polarisation?

What is light, Give the nature of light.