JEE Main 2013PhysicsWave OpticsEasyMCQ

JEE Main 2013 — Wave Optics Question with Solution

JEE Main 2013 (07 Apr)

Question

A beam of unpolarised light of intensity I0 is passed through a polaroid A and then through another polaroid B which is oriented so that its principle plane makes an angle of 45 o relative to that of A. The intensity of the emergent light is:

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Show full solutionCorrect option: A
Correct answer
AI04

Step-by-step explanation

Relation between intensities is



I R = I 0 2  cos 2 45 o = I 0 2 × 1 2 = I 0 4

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About this question

This is a previous-year question from JEE Main 2013, covering the Wave Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.