Four polaroids are so placed that the transmission-axis of each is inclined at an angle of `30^(@)` from the axis of the previous polaroid in the same
Four polaroids are so placed that the transmission-axis of each is inclined at an angle of `30^(@)` from the axis of the previous polaroid in the same direction. If unpolarised light-beam of intensity `I_(0)` falls on the first, polaroid, then what will be the intensity of the light emerging from the last polaroid?
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