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Unpolarised light of intensity 32 Wm^(-2...

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

A

`45^(@)`

B

`60^(@)`

C

`30^(@)`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • Upolarised light of intensity 32 W m^(-2) passes through three polarisers such that transmission axis of first is crossed with third. If intensity of emerging light is 2 W m^(-2) , what is the angle of transmission axis between the first two polarisers?

    A
    `30^(@)`
    B
    `45^(@)`
    C
    `22.5^(@)`
    D
    `60^(@)`

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