A system of three polarizers `P_(1),P_(2),P_(3)` is set up such that the pass axis of `P_(3)` is crossed with respect to that of `P_(1)`. The pass axis of `P_(2)` is incined at `60^(@)` to the pass axis of `P_(3)`. When a beam of unpolarized light of intensity `I_(0)` is incident on `P_(1)` the intensity of light transmitted by the three polarizes is I.The ratio `(I_(0)//I)` equals (nearly):

When an unpolarized light of intensity I_(0) is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

When an unpolarized light of intensity I_0 is incident on a polarizing sheet, the intensity of the light which dows not get transmitted is

Two polaroids, P_(1)andP_(2) are set-up so that their pass-axis crossed with respect to each other. A third polaroids, P_(3) is now introduces between these two so that its pass-axis makes and anlge theta with the pass-axis of P_(1) . A beam of unpolarised light, of intensity I, is incident on P_(1) . If the intensity of light, that gets transmitted through this combination of three polaroids is I find the ratio ((I)/(I)) when theta equals. (i) 30^(@)" "(ii)45^(@)

An unpolarized light with intensity 2I_(0) is passed through a polaroid. The resultant intensity of the transmitted light will be

Unpolarized light is intensity I_(0) passes through two polaroids P_(1) and P_(2) such that pass axis of P_(2) makes an angle theta with the pass axis of P_(1) . A third polaroid P_(3) is placed between P_(1) and P_(2) with pass axis of P_(3) making an angle beta with that of P_(1) . If I_(1), I_(2), I_(3) represent intensities of light trnasmitted by P_(1), P_(2), P_(3) , determine the values of angle theta and beta for which I_(1) = I_(2) = I_(3) .

Unpolarised light of intensity 32 Wm^(-2) passes through three polarizer such that the transmission axis of the last polarizer is crossed with that of the first. The intensity of final emerging light is 3Wm^(-2) . The intensity of light transmitted by first polarizer will be