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Question 20228
JEE Physics · Medium

Electromagnetic Waves and Wave Optics: Polaroid Application MCQ

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Polaroid ApplicationMediumQuestion 20228

Question

Polaroid sunglasses reduce glare from horizontal surfaces because:
  1. A
    They absorb all light
  2. B
    They transmit only the vertical polarisation component, blocking horizontally polarised reflected glare
    Correct
  3. C
    They are tinted
  4. D
    They reduce intensity by 1/4

Correct answer

They transmit only the vertical polarisation component, blocking horizontally polarised reflected glare

Explanation

Glare from horizontal surfaces (water, road) is predominantly horizontally polarised (near Brewster's angle). Polaroids oriented vertically block this polarisation, greatly reducing glare while transmitting vertically polarised components.

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