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A polaroid is placed at 45^@ to an incom...

A polaroid is placed at `45^@` to an incoming light of intensity `I_0`. Now the intensity of light passing through polaroid after polarisation would be

A

`I_(0)`

B

`I_(0) //2`

C

`I_(0)//4`

D

zero

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • A polaroid is placed at 45^(@) to an incoming light of intensity l_(0) Now, the intensity of light passing through polaroid after polarisation would be

    A
    `l_(0)`
    B
    `l_(0)//2`
    C
    `l_(0)//4`
    D
    zero

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    A
    `I_(0)`
    B
    `(I_(0))/(2)`
    C
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    D
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  • Two polaroids are placed in the path of unpolarised light of intensity I_(0) such that no light is emitted from the second polaroid. If a third polaroid, whose pass axis makes an angle theta with the pass axis of first polaroid, is placed between these polaroid then the intensity of the light emerging from the last polaroid will be

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    `(I_(0))/(8)sin^(2)2theta`
    B
    `(I_(0))/(4)sin^(2)2theta`
    C
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