Dispersion, Dispersive Power & Prism Combinations questions with solutions

Showing 1–10 of 21 questions

• MCQmediumGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  A thin prism P₁ with angle 4° and made from a glass of refractive index 1.54 is combined with another thin prism P₂ made from glass of refractive index 1.72 to produce dispersion without deviation. The angle (in degree) of the prism P₂ is :-

  Options

  • Option A

    4

  • Option B

    2

  • Option C

    3

  • Option D

    6

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• MatchmediumGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  In List-I, four optical effects are mentioned. The physical phenomena of light which are essential to describe these optical effects are given in List-II. Choose the option which describes the correct match between the entries in List-I to those in List-II.

  List 1

  1. (P) Colorful sky in north polar region (Aurora Borealis)

  2. (Q) Partially polarized sun light

  3. (R) Rainbow

  4. (S) Dark and bright fringes

  5. .

  List 2

  1. (1) Dispersion and reflection

  2. (2) Total internal reflection

  3. (3) Diffraction

  4. (4) Scattering of light by molecules in the atmosphere

  5. (5) Emission of radiation from oxygen and nitrogen atoms excited by charged particles

  Options

  • Option A

    P→5, Q→4, R→1, S→3

  • Option B

    P→4, Q→2, R→1, S→3

  • Option C

    P→4, Q→1, R→2, S→3

  • Option D

    P→5, Q→4, R→1, S→2

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  JEE Advanced2026Paper 1

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• MCQeasyGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  When a beam of white light is allowed to pass through convex lens parallel to principal axis, the different colours of light converge at different point on the principle axis after refraction. This is called :

  Options

  • Option A

    Scattering

  • Option B

    Chromatic aberration

  • Option C

    Spherical aberration

  • Option D

    Polarisation

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  JEE Mains24 January 2023Shift 2Evening Shift

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• MCQeasyGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  Given below are two statements :

  Statement I : When the white light passed through a prism, the red light bends lesser than yellow and violet.

  Statement II : The refractive indices are different for different wavelengths in dispersive medium.

  In the light of the above statements, choose the correct answer from the options given below :

  Options

  • Option A

    Both Statement I and Statement II are true.

  • Option B

    Statement I is true but Statement II is false.

  • Option C

    Both Statement I and Statement II are false.

  • Option D

    Statement I is false but Statement II is true.

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  JEE Mains 2024 05 Apr Evening Shift

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• MCQmediumGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  A beam of light consisting of red, green and blue and is incident on a right-angle prism. The refractive index of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47 respectively. The prism will

  

  Options

  • Option A

    separate part of the red color from the green and blue colors

  • Option B

    separate part of the blue color from the red and green colors

  • Option C

    separate all the three colors from the other two colors

  • Option D

    not separate even partially, any colors from the other two colors

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  JEE MainsJEE Advanced

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• MCQmediumGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  Chromatic aberration will be absent if for two thin lenses in contact :-

  Options

  • Option A

    ω₁/F₁ + ω₂/F₂ = 0

  • Option B

    ω₁/F₂ + ω₂/F₁ = 0

  • Option C

    F₁/ω₂ + F₂/ω₁ = 0

  • Option D

    ω₁/ω₂ + (F₁ + F₂) = 0

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• MCQmediumGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  It is desired to make an achromatic combination of two lenses (L₁ and L₂) made of materials having dispersive powers $\omega_1$ and $\omega_2$ (<$\omega_1$). If the combination of lenses is converging then

  Options

  • Option A

    L₁ is converging

  • Option B

    L₂ is converging

  • Option C

    Power of L₁ is greater than the power of L₂

  • Option D

    None of these

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  JEE MainsJEE Advanced

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• MCQmediumGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  The angle of prism is 5° and its refractive indices for red and violet colours are 1.5 and 1.6 respectively. The angular dispersion produced by the prism is : -

  Options

  • Option A

    7.75°

  • Option B

    5°

  • Option C

    0.5°

  • Option D

    0.17°

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• MCQmediumGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  Two thin prisms of flint glass, with refracting angles of 6° and 8° respectively, possess dispersive powers in the ratio :

  Options

  • Option A

    4 : 3

  • Option B

    3 : 4

  • Option C

    1 : 1

  • Option D

    9 : 16

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• MCQeasyGeometrical opticsDispersion, Dispersive Power & Prism Combinations

  A thin prism with angle 5° of refractive index 1.72 is combined with another prism of refractive index 1.9 to produce dispersion without deviation. The angle of second prism is ______.

  Options

  • Option A

    4.5°

  • Option B

    6°

  • Option C

    4°

  • Option D

    5°

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  JEE Mains 202623 January Morning Shift

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