The optic axes of two polaroids are inclined at an angle of `45@` with each other. Unpolarised light of intensity `I_0` being incident on the first polaroid emerges from the second polaroid. Find the intesity of the emergent light.

The optic axis of two polaroids are inclined at an angle of 45^(@) with each other. Unpolarised light of intensity I_(0) being incident on the first polaroid emerges from the second polaroid. Find the intensity of the emergent light.

A polaroid is inclined at an angle 45^(@) with the incident light of intensity I_(0) . After polarisation, intensity of the light emitted from the polaroid is

Two polaroids P_(1) and P(2) are placed with pass axes perpendicular to each other. Unpolarised light of intensity I_(0) is incident on P_(1) . A thrid polaroid P_(3) is kept in between P_(1) and P_(2) such that its pass axis makes an angle of 45^(@) with that of P_(1) . Determine the intensity of light transmitted through P_(1) , P_(2) "and" P_(3).

An unpolarised light of intensity I_(0) falls on a pair of Nicol prism. Angle between the two prisms is 60^(@) . Intensity of the light emitted from the prism will be

Calculate the refracting angle of a prism (mu = sqrt2) if a ray of light incident normally on one of the face emerges from the other face just grazing it.