Department of Pre-University Education, Karnataka course PUC Karnataka Science Class 12
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# If the Angle Between the Pass Axis of Polarizer and the Analyser is 45º, Write the Ratio of the Intensities of Original Light and the Transmitted Light After Passing Through the Analyser. - Physics

ConceptPlane Polarised Light

#### Question

If the angle between the pass axis of polarizer and the analyser is 45º, write the ratio of the intensities of original light and the transmitted light after passing through the analyser.

#### Solution

I = Im cos2 θ

Where,

I is the transmitted intensity

Imis the maximum value of the transmitted intensity

θ is the angle between the two polarising directions

l/l_m = cos^2 theta

I/I_m = cos^2 45° = (1/sqrt2)^2

I/I_m = 1/2

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Solution If the Angle Between the Pass Axis of Polarizer and the Analyser is 45º, Write the Ratio of the Intensities of Original Light and the Transmitted Light After Passing Through the Analyser. Concept: Plane Polarised Light.
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