Three circularly shaped linear polarisers are placed coaxially. The transmission axis of the first polariser is at `30^(@)`, the second one is at `60^(@)` and the third at `90^(@)` to the vertical all in the clockwise sense. Each polariser additionally absorbs `10%` of the light. If a vertically polarised beam of light of intensity I = 100 `W//m^(2)` is incident on this assembly of polarisers, then the final intensity of the transmitted light will be close to

Options

A. 10`W//m^(2)`
B. 20`W//m^(2)`
C. 30`W//m^(2)`
D. 50 `W//m^(2)`

Answer

C