Polarisation of Light questions with solutions

Showing 1–10 of 44 questions

• MCQeasyWave OpticsPolarisation of Light

  Unpolarized light travelling from air falls on a transparent dielectric surface at the Brewster angle 60°. What is the refractive index of the dielectric relative to air?

  Options

  • Option A

    √2

  • Option B

    √3

  • Option C

    3 ÷ 2

  • Option D

    2

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  JEE MainsNEETJEE Advanced

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• Multi-correctmediumWave OpticsPolarisation of Light

  Vertically polarized headlight light travels along the road, scatters from dust, and is observed from a direction perpendicular to the road as shown. Which statements describe the scattered light?

  

  Select all that apply

  • Option A

    Having no intensity in direction of observer.

  • Option B

    Has electric field in vertical plane ⊥ to car's velocity.

  • Option C

    Has magnetic field parallel to car's velocity but in horizontal plane.

  • Option D

    Has magnetic field in vertical plane parallel to car's velocity.

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  JEE Advanced

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• NumericeasyWave OpticsPolarisation of Light

  Unpolarized light of intensity I₀ passes through a polarizer, then through an optically active solution, and finally through an analyser. The transmission axes of the polarizer and analyser are parallel. The intensity emerging from the analyser is 3I₀/8. If the solution rotates the plane of polarization by θ relative to the analyser axis, find θ in degrees.

  Your answer

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  JEE Mains 2026 6 April Morning Shift

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• MCQeasyWave OpticsPolarisation of Light

  Two polaroids A and B are placed such that their pass axes are perpendicular to each other. Another polaroid C is placed between A and B bisecting the angle between them. If intensity of unpolarised light is I₀, then intensity transmitted after passing through polaroid B will be:

  Options

  • Option A

    I₀/4

  • Option B

    I₀/2

  • Option C

    I₀/8

  • Option D

    Zero

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  JEE Mains31 January 2023Shift 1Morning Shift

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• MCQeasyWave OpticsPolarisation of Light

  Unpolarized light of intensity I₀ is incident on an ideal polarizer. An ideal analyser is placed after it with its transmission axis making an angle of 60° with the transmission axis of the first polarizer. What is the final transmitted intensity?

  Options

  • Option A

    I₀ ÷ 2

  • Option B

    I₀ ÷ 4

  • Option C

    I₀ ÷ 8

  • Option D

    3I₀ ÷ 8

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  JEE MainsNEETJEE Advanced

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• MCQeasyWave OpticsPolarisation of Light

  Unpolarised light is incident from air on a plane surface of material of refractive index μ. At some incidence angle i, the reflected and refracted rays are perpendicular. Which option is correct?

  Options

  • Option A

    i = sin⁻¹(1/μ)

  • Option B

    Reflected light is polarised with its electric vector perpendicular to plane of incidence.

  • Option C

    Reflected light is polarised with its electric vector parallel to plane of incidence.

  • Option D

    i = tan⁻¹(1/μ)

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  NEET 2018NEET Previous Year

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• MCQeasyWave OpticsPolarisation of Light

  Two plane-polarized light waves combine at a point. Their electric-field components are E₁ = E₀ sinωt and E₂ = E₀ sin(ωt + π/3). The amplitude of the resultant wave is:

  Options

  • Option A

    0.9E₀

  • Option B

    E₀

  • Option C

    1.7E₀

  • Option D

    3.4E₀

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  JEE Mains 2025 7 April Morning Shift

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• MCQeasyWave OpticsPolarisation of Light

  An unpolarised light beam strikes a glass surface at Brewster’s angle. Then:

  Options

  • Option A

    The refracted light will be completely polarised.

  • Option B

    Both reflected and refracted light will be completely polarised.

  • Option C

    The reflected light will be completely polarised but refracted light will be partially polarised.

  • Option D

    The reflected light will be partially polarised.

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  NEET 2024

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• MCQmediumWave OpticsPolarisation of Light

  Light travels from glass of refractive index 3 ÷ 2 into air. The light is incident at the Brewster angle for this glass-air interface. What is sin i(B)?

  Options

  • Option A

    2 ÷ √13

  • Option B

    3 ÷ √13

  • Option C

    2 ÷ 3

  • Option D

    1 ÷ √3

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  JEE MainsNEETJEE Advanced

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• MCQeasyWave OpticsPolarisation of Light

  Which of the following phenomenon is NOT common to sound and light waves?

  Options

  • Option A

    Interference

  • Option B

    Diffraction

  • Option C

    Coherence

  • Option D

    Polarisation

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  AIPMT 1988NEET Previous Year

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