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Byju's Answer

Standard XII

Physics

Polarisation

When an unpol...

Question

When an unpolarized light of intensity $I_{0}$ is incident on a polarizing sheet, the intensity of the light which does not get transmitted is:

\frac{1}{2} I_{0}

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\frac{1}{4} I_{0}

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Zero

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I_{0}

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Solution

The correct option is A $\frac{1}{2} I_{0}$
$I = I_{0} {cos}^{2} θ$
Intensity of polarized light $= \frac{I_{0}}{2}$
$∴$ Intensity of untransmitted light $= I_{0} - \frac{I_{0}}{2} = \frac{I_{0}}{2}$

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When an unpolarized light of intensity I0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is:

The correct option is A 12I0I=I0cos2θIntensity of polarized light =I02∴ Intensity of untransmitted light =I0−I02=I02

When an unpolarized light of intensity $I_{0}$ is incident on a polarizing sheet, the intensity of the light which does not get transmitted is:

The correct option is A $\frac{1}{2} I_{0}$
$I = I_{0} {cos}^{2} θ$
Intensity of polarized light $= \frac{I_{0}}{2}$
$∴$ Intensity of untransmitted light $= I_{0} - \frac{I_{0}}{2} = \frac{I_{0}}{2}$