Unpolarised light of intensity 32 `W//m^(2)` passes through a polariser and analyser which are at an angle of `30^(@)` with respect to each other. The intensity of the light coming from analyser is

Unpolarised ligh of intensity 32 W"/"m^(2) passes through a polariser and analyer which are at ain angle of 30^(@) with respect to each other. The intensity of the light coming from analyser is

Unpolarised light passes through a polariser and analyser which are at an angle of 45^(@) with respect to each other. The intensity of polarised light coming fromanalyse is 5W//m^(2) . The intensity of unpolarised light incident on polariset is

Unpolarised light of intensity 32 Wm^(-2) passes through three polarisers such that the transmission axis of the last polariser is crossed with first. If the intensity of the emerging light is 3Wm^(-2) , the angle between the axes of the first two polarisers is