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Refraction through a Prism for GUJCET: 20 solved questions

Real GUJCET 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 2009 to 2026. No sign-in needed to read them.

What this topic asks

• Deviation and minimum deviation — 13 questions
• Dispersion and scattering — 7 questions

All 20 questions with solutions

• For a prism of refractive index 1.732, the angle of minimum deviation is equal to the angle of the prism. The… GUJCET 2009
• The refractive index of the material of a prism is 1.5. If δₘ=A, what is the value of the angle of the given… GUJCET 2011
• The angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of the given prism.… GUJCET 2015
• If the focal lengths of a lens for red and violet light rays are f_R and f_V respectively, then which of the… GUJCET 2016
• A small angled prism of refractive index 1.6 gives a deviation of 3.6°. The angle of the prism is . GUJCET 2018
• A glass prism having refractive index μ is placed in air. For it the angle of minimum deviation of the prism… GUJCET 2021
• For a thin prism, the angle of prism is 4° having refractive index 1.6, then the angle of minimum deviation w… GUJCET 2024
• At what angle of incidence should a ray of light incident on a face of an equilateral prism of minimum angle… GUJCET 2025
• For general students : Find the value of angle of emergence for a emergent ray from the prism in the figure g… GUJCET 2026
• For blind students only : If the refractive index of a prism with small prism angle is 1.6 and angle of minim… GUJCET 2026
• Stokes and anti-Stokes lines observed in Raman scattering are due to of light. GSEB Board July 2015
• The top of the sky looks blue in morning hours because . GSEB Board July 2016
• When a ray of monochromatic light is made incident on an equilateral prism at an angle of 48° 52', the angle… GSEB Board March 2020 (old course)
• When light rays undergo internal reflections inside a raindrop, a secondary rainbow is formed. GSEB Board March 2022
• The primary rainbow is the result of which of the following three-step processes? GSEB Board July 2022
• A parallel beam of light is incident on a face of a thin prism having an angle of prism equal to 6°. The angl… GSEB Board July 2023
• A horizontal ray is incident on a right-angled prism whose refracting angle is 4°, as shown in the figure. If… RS Academy GUJCET booklet
• A ray of light experiences minimum deviation by an equilateral prism P. Now two prisms Q and R made of the sa… RS Academy GUJCET booklet
• As shown in the figure, thin prisms P₁ and P₂ are combined to produce dispersion without deviation. For prism… RS Academy GUJCET booklet
• If the size of a particle is a and the wavelength of light is λ, then for a λ the scattering is directly prop… GSEB Board March 2020