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Ray Optics

JEE Mains Physics. Try each one first, then open its answer.

Top 10 JEE Mains PYQs to practise first

The questions and kinds of question asked most often come first. Each one says how often and in which papers.

  1. Question 1

    This type asked 12 times: 2021 Paper 13, 28 Jun 2022, 15 Apr 2023, 27 Jan 2024, 31 Jan 2024, 6 Apr 2024, 23 Jan 2025, 2 Apr 2025, 28 Jan 2026 S2, 2 Apr 2026 S1, 5 Apr 2026 S1, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 12 of this type

    17
    Angle of minimum deviation is equal to the half of the angle of prism in an equilateral prism. The refractive index of the prism is ____\_\_\_\_ .

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  2. Question 2

    This type asked 9 times: 2021 Paper 6, 28 Jul 2022, 24 Jan 2023, 11 Apr 2023, 29 Jan 2024, 24 Jan 2025, 29 Jan 2025, 7 Apr 2025, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 9 of this type

    24
    A convex lens of refractive index 1.5 and focal length f=18 cmf = 18\text{ }cm is immersed in water. The difference in focal lengths of the given lens when it is in water and in air is α×f\alpha \times f. The value of α\alpha is ____\_\_\_\_ . (refractive index of water =4/3= 4/3 )

  3. Question 3

    This type asked 8 times: 8 Apr 2023, 31 Jan 2024, 23 Jan 2025, 28 Jan 2025, 29 Jan 2025, 2 Apr 2025, 3 Apr 2025, 6 Apr 2026 S1. This one: 6 Apr 2026 S1 See all 8 of this type

    16
    A spherical interface lens of radius R separates two media of refractive indices 1 and 1.4 respectively as shown in the figure below. A point source is placed at a distance of 4 R in front of spherical interface. The magnitude of the magnification of point source image is ____\_\_\_\_ .

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  4. Question 4

    This type asked 7 times: 2021 Paper 7, 6 Apr 2024, 2 Apr 2025, 3 Apr 2025, 28 Jan 2026 S1, 2 Apr 2026 S2, 4 Apr 2026 S2. This one: 4 Apr 2026 S2 See all 7 of this type

    16
    A convex lens is made from glass material having refractive index of 1.4 with same radius of curvature on both sides. The ratio of its focal length and radius of curvature is ____\_\_\_\_ .

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  5. Question 5

    This type asked 6 times: 25 Jun 2022, 29 Jun 2022, 26 Jul 2022, 11 Apr 2023, 8 Apr 2024, 23 Jan 2026 S1. This one: 23 Jan 2026 S1 See all 6 of this type

    11
    Consider light travelling from a medium A to medium B separated by a plane interface. If the light undergoes total internal reflection during its travel from medium A to B and the speed of light in media AA and BB are 2.4×108 m/s2.4 \times10^{8}\text{ }m/s and 2.7×108 m/s2.7 \times10^{8}\text{ }m/s respectively, then the value of critical angle is :

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  6. Question 6

    This type asked 5 times: 29 Jan 2024, 28 Jan 2025, 4 Apr 2025, 7 Apr 2025, 24 Jan 2026 S2. This one: 24 Jan 2026 S2 See all 5 of this type

    20
    Distance between an object and three times magnified real image is 40 cm . The focal length of the mirror used is ____\_\_\_\_ cm .

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  7. Question 7

    This type asked 4 times: 22 Jan 2025, 23 Jan 2025, 24 Jan 2025, 8 Apr 2026 S2. This one: 8 Apr 2026 S2 See all 4 of this type

    5
    A thin biconvex lens is prepared from the glass ( μ=1.5\mu= 1.5 ) both curved surfaces of which have equal radii of 20 cm each. Left side surface of the lens is silvered from outside to make it reflect. To have the position of image and object at the same place, the object should be placed, from the lens at a distance of ____\_\_\_\_ cm.

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  8. Question 8

    This type asked 4 times: 10 Apr 2023, 12 Apr 2023, 8 Apr 2024, 5 Apr 2026 S2. This one: 5 Apr 2026 S2 See all 4 of this type

    16
    An object AB is placed 15 cm on the left of a convex lens P of focal length 10 cm . Another convex lens Q is now placed 15 cm right of lens P . If the focal length of lens Q is 15 cm , the final image is ____\_\_\_\_

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  9. Question 9

    This type asked 4 times: 26 Jul 2022, 23 Jan 2026 S2, 24 Jan 2026 S1, 2 Apr 2026 S2. This one: 2 Apr 2026 S2 See all 4 of this type

    16
    One side of an equilateral prism is painted by a transparent material of refractive index n2n_{2}. The refractive index of prism is 1.6 . The minimum value of n2n_{2} required for total internal reflection from painted face is ____\_\_\_\_ .

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  10. Question 10

    This type asked 4 times: 27 Jul 2022, 30 Jan 2023, 28 Jan 2025, 23 Jan 2026 S1. This one: 23 Jan 2026 S1 See all 4 of this type

    1
    A thin prism with angle 5∘5^{\circ} 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 ____\_\_\_\_ .

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