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Physics - Ray Optics

Practise 301 JEE Main previous year questions on Ray Optics, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Main tests.

Ray Optics has been asked in 25 of the 25 years of JEE Main papers analysed (2002–2026), with 301 questions in all. 33% of them were easy, 48% moderate and 20% tough. Most of its questions came from 2025, with 43 questions that year. In the last three years (2024–2026) it had 84 questions across 49 papers, about 1.7 per paper.

The chapter's 10 topics are not weighted equally: Lens Formula, Refraction of light from curved surface (93 questions, 31%), Refraction of light from plane surface (46 questions, 15%), and Prism and Dispersion of Light (40 questions, 13%) have been asked the most. Lens Formula, Refraction of light from curved surface has also led over the last five years, with 60 questions. Lens Formula, Refraction of light from curved surface has produced the most tough questions (20).

  1. 1A thin biconvex lens is prepared from the glass ( ) both curved surfaces of which have equal radii of cm each. Left side surface of the lens08 Apr, 2026 (E)Lens Formula, Refraction of light from curved surface
  2. 2Light ray incident along a vector emerges out along vector as shown in the figure below. The value of is ________.08 Apr, 2026 (E)Refraction of light from plane surface
  3. 3A spherical interface lens of radius separates two media of refractive indices and respectively as shown in the figure below. A point source06 Apr, 2026 (M)Lens Formula, Refraction of light from curved surface
  4. 4Angle of minimum deviation is equal to the half of the angle of prism in an equilateral prism. The refractive index of the prism is ________06 Apr, 2026 (E)Prism and Dispersion of Light
  5. 5A concave mirror of focal length cm forms an image which is double the size of object when the object is placed at two different positions. 06 Apr, 2026 (E)Mirror Formula, Reflection in Spherical Mirror
  6. 6A ray of light passing through an equilateral prism is having velocity m/s in the prism material, then the minimum angle of deviation is ___05 Apr, 2026 (M)Prism and Dispersion of Light
  7. 7A compound microscope is designed with two symmetric biconvex lenses. The objective lens is cut vertically, creating two identical plano-con05 Apr, 2026 (M)Optical Instruments
  8. 8A thin convex lens and a thin concave lens are kept in contact and are co-axial. Which of the following statements is correct for this combi05 Apr, 2026 (E)Lens Formula, Refraction of light from curved surface
  9. 9An object is placed on the left of a convex lens of focal length . Another convex lens is now placed right of lens . If the focal length of 05 Apr, 2026 (E)Lens Formula, Refraction of light from curved surface
  10. 10A rod of length cm lies along the principle axis of a concave mirror of focal length cm as shown in figure. The length of the image is _____04 Apr, 2026 (M)Mirror Formula, Reflection in Spherical Mirror
  11. 11A convex lens is made from glass material having refractive index of with same radius of curvature on both sides. The ratio of its focal len04 Apr, 2026 (E)Lens Formula, Refraction of light from curved surface
  12. 12For a thin symmetric prism made of glass (refractive index ), the ratio of incident angle and minimum deviation will be _______.02 Apr, 2026 (M)Prism and Dispersion of Light
  13. 13Refer the figure given below. and are refractive indices of air and lens material. The height of image will be _______ cm.02 Apr, 2026 (M)Lens Formula, Refraction of light from curved surface
  14. 14One side of an equilateral prism is painted by a transparent material of refractive index . The refractive index of prism is . The minimum v02 Apr, 2026 (E)Critical angle and total internal reflection
  15. 15If sunlight is focused on a paper using convex lens, it starts burning the paper in shortest time when the lens is kept at cm above the pape02 Apr, 2026 (E)Lens Formula, Refraction of light from curved surface
  16. 16The magnitudes of power of a biconvex lens (refractive index 1.5) and that of a plano-concave lens (refractive index ) are same. If the curv28 Jan, 2026 (M)Lens Formula, Refraction of light from curved surface
  17. 17A convex lens of refractive index 1.5 and focal length is immersed in water. The difference in focal lengths of the given lens when it is in28 Jan, 2026 (M)Lens Formula, Refraction of light from curved surface
  18. 18A biconvex lens is formed by using two thin planoconvex lenses, as shown in the figure. The refractive index and radius of curved surfaces a28 Jan, 2026 (E)Combination of Lens and Mirrors
  19. 19For a transparent prism, if the angle of minimum deviation is equal to its refracting angle, the refractive index of the prism satisfies.28 Jan, 2026 (E)Prism and Dispersion of Light
  20. 20The exit surface of a prism with refractive index is coated with a material having refractive index . When this prism is set for minimum ang24 Jan, 2026 (M)Prism and Dispersion of Light
  21. 21In a microscope of tube length 10 cm two convex lenses are arranged with focal length of 2 cm and 5 cm. Total magnification obtained with th24 Jan, 2026 (M)Optical Instruments
  22. 22Distance between an object and three times magnified real image is 40 cm. The focal length of the mirror used is cm.24 Jan, 2026 (E)Mirror Formula, Reflection in Spherical Mirror
  23. 23Five persons and recorded object distance and image distance (v) using same convex lens having power +5 D as and respectively. Identify corr24 Jan, 2026 (E)Lens Formula, Refraction of light from curved surface
  24. 24A thin prism with angle of refractive index 1.72 is combined with another prism of refractive index 1.9 to produce dispersion without deviat23 Jan, 2026 (M)Prism and Dispersion of Light
  25. 25Consider light travelling from a medium to medium separated by a plane interface. If the light undergoes total internal reflection during it23 Jan, 2026 (M)Critical angle and total internal reflection
  26. 26A prism of angle and refractive index is coated with thin film of refractive index 1.5 only at the back exit surface. To have total internal23 Jan, 2026 (E)Prism and Dispersion of Light
  27. 27The size of the images of an object, formed by a thin lens are equal when the object is placed at two different positions 8 cm and 24 cm fro23 Jan, 2026 (E)Lens Formula, Refraction of light from curved surface
  28. 28Consider an equilateral prism (refractive index ). A ray of light is incident on its one surface at a certain angle . If the emergent ray is22 Jan, 2026 (M)Prism and Dispersion of Light
  29. 29A parallel beam of light travelling in air (refractive index 1.0) is incident on a convex spherical glass surface of radius of curvature 50 22 Jan, 2026 (M)Lens Formula, Refraction of light from curved surface
  30. 30A thin convex lens of focal length 5 cm and a thin concave lens of focal length 4 cm are combined together (without any gap) and this combin22 Jan, 2026 (M)Lens Formula
  31. 31In parallax method for the determination of focal length of a concave mirror, the object should always be placed:22 Jan, 2026 (E)Mirror Formula, Reflection in Spherical Mirror
  32. 32The wavelength of light, while it is passing through water is 540 nm. The refractive index of water is . The wavelength of the same light wh22 Jan, 2026 (E)Refraction of light from plane surface
  33. 33A collimated beam of light of diameter 2 mm is propagating along -axis. The beam is required to be expanded in a collimated beam of diameter21 Jan, 2026 (M)Lens Formula, Refraction of light from curved surface
  34. 34In a microscope the objective is having focal length and eye-piece is having focal length . The tube length is 32 cm. The magnification prod21 Jan, 2026 (M)Optical Instruments
  35. 35As shown in the diagram, when the incident ray is parallel to base of the prism, the emergent ray grazes along the second surface. If refrac21 Jan, 2026 (E)Prism and Dispersion of Light
  36. 36A concave-convex lens of refractive index 1.5 and the radii of curvature of its surfaces are 30 cm and 20 cm , respectively. The concave sur08 Apr, 2025 (E)Lens Formula, Refraction of light from curved surface
  37. 37A convex lens of focal length 30 cm is placed in contact with a concave lens of focal length 20 cm. An object is placed at 20 cm to the left08 Apr, 2025 (E)Lens Formula, Refraction of light from curved surface
  38. 38A container contains a liquid with refractive index of 1.2 up to a height of 60 cm and another liquid having refractive index 1.6 is added t07 Apr, 2025 (M)Refraction of light from plane surface
  39. 39A lens having refractive index 1.6 has focal length of 12 cm , when it is in air. Find the focal length of the lens when it is placed in wat07 Apr, 2025 (M)Lens Formula, Refraction of light from curved surface
  40. 40Two thin convex lenses of focal length 30 cm and 10 cm are placed coaxially, 10 cm apart. The power of this combination is :07 Apr, 2025 (M)Lens Formula, Refraction of light from curved surface
  41. 41A mirror is used to produce an image with magnification of . If the distance between object and its image is 40 cm , then the focal length o07 Apr, 2025 (E)Mirror Formula, Reflection in Spherical Mirror
  42. 42A transparent block A having refractive index is surrounded by another medium of refractive index as shown in figure. A light ray is inciden07 Apr, 2025 (E)Critical angle and total internal reflection
  43. 43Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A) : Refractive index o07 Apr, 2025 (E)Refraction of light from plane surface
  44. 44When an object is placed 40 cm away from a spherical mirror an image of magnification is produced. To obtain an image with magnification of 04 Apr, 2025 (M)Mirror Formula, Reflection in Spherical Mirror
  45. 45Distance between object and its image is 30 cm. The focal length of the mirror used is , where magnitude of value of is _________.04 Apr, 2025 (M)Mirror Formula, Reflection in Spherical Mirror
  46. 46A finite size object is placed normal to the principal axis at a distance of 30 cm from a convex mirror of focal length 30 cm. A plane mirro04 Apr, 2025 (E)Mirror Formula, Reflection in Spherical Mirror
  47. 47The radii of curvature for a thin convex lens are 10 cm and 15 cm respectively. The focal length of the lens is 12 cm. The refractive index 03 Apr, 2025 (M)Lens Formula, Refraction of light from curved surface
  48. 48Consider following statements for refraction of light through prism, when angle of deviation is minimum. (A) The refracted ray inside prism 03 Apr, 2025 (M)Prism and Dispersion of Light
  49. 49Light from a point source in air falls on a spherical glass surface (refractive index, and radius of curvature ). The image is formed at a d03 Apr, 2025 (E)Lens Formula, Refraction of light from curved surface
  50. 50A slanted object is placed on one side of convex lens as shown in the diagram. The image is formed on the opposite side. Angle made by the i02 Apr, 2025 (M)Reflection of Light from Plane Mirror

Frequently Asked Questions

1.How many questions are available for Ray Optics?

This chapter includes 301 questions compiled from JEE Main papers spanning 2002 to 2026.

2.Are these questions only from JEE Main, or from other exams too?

These are JEE Main questions specifically for the Ray Optics chapter. Questions from other exams like NTA Abhyas (JEE Main) or JEE Advanced are organised separately under their respective exam sections.

3.Is Ray Optics an important chapter for JEE Main Physics?

Ray Optics has appeared in 25 of the 25 years of JEE Main papers covered here, with 301 questions across 190 papers - about 2 per paper it appears in.

4.What is the difficulty level of Ray Optics questions in JEE Main?

Of the 301 questions analysed for this chapter, 33% are easy, 48% moderate and 20% tough. 2025 had the most, with 43 questions.

5.Which topics in Ray Optics should I focus on?

These topics have carried the most weightage in Ray Optics:

  • Lens Formula, Refraction of light from curved surface - 93 questions (31%)
  • Refraction of light from plane surface - 46 questions (15%)
  • Prism and Dispersion of Light - 40 questions (13%)
  • Lens Formula, Refraction of light from curved surface has produced the most tough questions (20).
6.Is Ray Optics's weightage in JEE Main going up or down?

Across all 190 papers analysed, Ray Optics has averaged about 1.6 questions per paper. In the last three years (2024–2026), that average has stayed about the same, at about 1.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.