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in Physics by (90.5k points)
The polaroids are placed in the path of unpolarized beam of intensity `I_(0)` such that no light is emitted fromthesecond polarid. If a third polaroid whose polarization axis makes an angle `theta` with the polarization axis of first polaroid, is placed between these4 polariods then the intensity of light emerging from the last polariod will be
A. `((I_(0))/(8))sin^(2)2theta`
B. `((I_(0))/(4))sin^(2)2theta`
C. `((I_(0))/(2))cos^(2)theta`
D. `I_(0)cos^(4)theta`

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1 Answer

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by (88.5k points)
Correct Answer - A
`I = (I_(0))/(2)cos^(2)theta`

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