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Refraction through a Prism for JEE: 31 solved questions

Real JEE paper questions on refraction through a prism, part of ray optics and optical instruments. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2006 to 2026. No sign-in needed to read them.

What this topic asks

• Deviation and minimum deviation — 23 questions
• Dispersion and scattering — 8 questions

All 31 questions with solutions

• For a thin symmetric prism made of glass (refractive index 1.5), the ratio of incident angle and minimum devi… JEE Main 2nd April 1st Shift 2026
• A ray of light passing through an equilateral prism is having velocity 2.12 × 10⁸ m/s in the prism material,… JEE Main 5th April 1st Shift 2026
• Angle of minimum deviation is equal to the half of the angle of prism in an equilateral prism. The refractive… JEE Main 6th April 2nd Shift 2026
• As shown in the diagram, when the incident ray is parallel to base of the prism, the emergent ray grazes alon… JEE Main 21st Jan 2nd Shift 2026
• Consider an equilateral prism (refractive index √2). A ray of light is incident on its one surface at a certa… JEE Main 22nd Jan 1st Shift 2026
• The exit surface of a prism with refractive index n is coated with a material having refractive index n/2. Wh… JEE Main 24th Jan 1st Shift 2026
• For a transparent prism, if the angle of minimum deviation is equal to its refracting angle, the refractive i… JEE Main 28th Jan 2nd Shift 2026
• Consider following statements for refraction of light through prism, when angle of deviation is minimum. (A)… JEE Main 3rd April 1st Shift 2025
• The refractive index of the material of a glass prism is √3. The angle of minimum deviation is equal to the a… JEE Main 23rd Jan 2nd Shift 2025
• If the refractive index of the material of a prism is cot (A/2), where A is the angle of prism then the angle… JEE Main 27th Jan 1st Shift 2024
• A prism of refractive index μ and angle of prism A is placed in the position of minimum angle of deviation. I… JEE Main 25th July 2nd Shift 2021
• The expected graphical representation of the variation of angle of deviation δ with angle of incidence i in a… JEE Main 27th July 2nd Shift 2021
• The angle of deviation through a prism is minimum when (A) incident ray and emergent ray are symmetric to the… JEE Main 16th March 1st Shift 2021
• A monochromatic light is incident at a certain angle on an equilateral triangular prism and suffers minimum d… JEE Main 11th Jan 2nd Shift 2019
• A ray of light is incident at an angle of 60° on one face of a prism of angle 30°. The emergent ray of light… JEE Main Online 2018
• The graph between angle of deviation (δ) and angle of incidence (i) for a triangular prism is represented by JEE Main 2013
• A ray of light suffers minimum deviation when incident on a prism having angle of the prism equal to 60°. The… JEE Main 2nd April 2nd Shift 2025
• The refractive index of prism is μ = √3 and the ratio of the angle of minimum deviation to the angle of prism… JEE Main 6th April 1st Shift 2024
• The refractive index of a transparent liquid filled in an equilateral hollow prism is √2. The angle of minimu… JEE Main 15th April 1st Shift 2023
• The refractive index of an equilateral prism is √2. The angle of emergence under minimum deviation position o… JEE Main 30th June 1st Shift 2022
• Cross-section view of a prism is the equilateral triangle ABC shown in the figure. The minimum deviation is o… JEE Main 31st Aug 2nd Shift 2021
• A ray of light passing through a prism (μ = √3) suffers minimum deviation. It is found that the angle of inci… JEE Main 22nd July 2nd Shift 2021
• A prism of angle A = 1° has a refractive index μ = 1.5. A good estimate for the minimum angle of deviation (i… JEE Main 5th Sept 2nd Shift 2020
• Which of the following statement is correct? JEE Main 25th July 1st Shift 2022
• When a beam of white light is allowed to pass through convex lens parallel to principal axis, the different c… JEE Main 24th Jan 2nd Shift 2023
• A thin prism with angle 5° of refractive index 1.72 is combined with another prism of refractive index 1.9 to… JEE Main 23rd Jan 1st Shift 2026
• A thin prism P₁ with angle 4° made of glass having refractive index 1.54, is combined with another thin prism… JEE Main 28th Jan 1st Shift 2025
• Given below are two statements: Statement I: When the white light passed through a prism, the red light bends… JEE Main 5th April 2nd Shift 2024
• The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown.… JEE Main 11th Jan 1st Shift 2019
• The refractive index of glass is 1.520 for red light and 1.525 for blue light. Let D₁ and D₂ be angles of min… JEE Main 2006
• A prism of refractive index n₁ and another prism of refractive index n₂ are stuck together (as shown in figur… JEE Main 27th July 1st Shift 2021