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Physics - Ray Optics

Practise 85 KCET previous year questions on Ray Optics, compiled from papers spanning 2007 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 KCET tests.

Ray Optics has been asked in 20 of the 20 years of KCET papers analysed (2007–2026), with 85 questions in all. 34% of them were easy, 45% moderate and 21% tough. Most of its questions came from 2009, with 6 questions that year. In the last three years (2024–2026) it had 14 questions across 3 papers, about 4.7 per paper.

The chapter's 9 topics are not weighted equally: Lens Formula, Refraction of light from curved surface (21 questions, 25%), Refraction of light from plane surface (19 questions, 22%), and Prism and Dispersion of Light (14 questions, 16%) have been asked the most. Lens Formula, Refraction of light from curved surface has also led over the last five years, with 7 questions. Refraction of light from plane surface has produced the most tough questions (8).

  1. 1With reference to the figure shown below, match the following: List-I List-II (a) Angle of reflection (i) (b) Value of (ii) (c) Angle of dev2026Reflection of Light from Plane Mirror
  2. 2The direction of a ray of light incident on a concave mirror is shown by PQ, while direction in which the ray would travel after reflection 2026Mirror Formula, Reflection in Spherical Mirror
  3. 3The incorrect statement about refractive index for a pair of media is2026Refraction of light from plane surface
  4. 4The critical angle for a monochromatic light going from medium A to medium B is . If the speed of light in medium A is , then the speed of l2026Critical angle and total internal reflection
  5. 5From the graph of angle of deviation versus angle of incidence for an equilateral prism, the refractive index of material of prism is2026Prism and Dispersion of Light
  6. 6A ray of light passes from vaccum into a medium of refractive index . If the angle of incidence is twice the angle of refraction, then the a2025Refraction of light from plane surface
  7. 7A convex lens has power . It is cut into two halves along its principal axis. Further one piece (out of two halves) is cut into two halves p2025Lens Formula, Refraction of light from curved surface
  8. 8The image formed by an objective lens of a compound microscope is2025Optical Instruments
  9. 9If and denotes the angles inside the prism having angle of prism considering that during interval of time from to varies with time as . Duri2025Prism and Dispersion of Light
  10. 10In determining the refractive index of a glass slab using a travelling microscope, the following readings are tabulated (a) Reading of trave2025Refraction of light from plane surface
  11. 11The final image formed by an astronomical telescope is2024Optical Instruments
  12. 12If the angle of minimum deviation is equal to angle of a prism for an equilateral prism, then the speed of light inside the prism is .....2024Prism and Dispersion of Light
  13. 13A luminous point object is placed at a distance from the spherical boundary separating two transparent media of refractive indices and as sh2024Lens Formula, Refraction of light from curved surface
  14. 14An equiconvex lens of radius of curvature 14 cm is made up of two different materials. Left half and right half of vertical portion is made 2024Combination of Lens and Mirrors
  15. 15For a point object, which of the following always produces virtual image in air?2023Mirror Formula, Reflection in Spherical Mirror
  16. 16For a given pair of transparent media, the critical angle for which colour is maximum?2023Critical angle and total internal reflection
  17. 17An equiconvex lens made of glass of refractive index has focal length in air. It is completely immersed in water of refractive index . The p2023Lens Formula, Refraction of light from curved surface
  18. 18A point object is moving at a constant speed of along the principal axis of a convex lens of focal length . The speed of the image is also ,2023Lens Formula, Refraction of light from curved surface
  19. 19The power of a equi-concave lens is and is made of a material of refractive index 1.6, the radii of curvature of the lens is2022Lens Formula, Refraction of light from curved surface
  20. 20A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and2022Prism and Dispersion of Light
  21. 21A convex lens of focal length is placed somewhere in between an object and a screen. The distance between the object and the screen is . If 2022Lens Formula, Refraction of light from curved surface
  22. 22Focal length of a convex lens will be maximum for2022Lens Formula, Refraction of light from curved surface
  23. 23Consider a glass slab which is silvered at one side and the other side is transparent. Given the refractive index of the glass slab to be 1.2022Refraction of light from plane surface
  24. 24In refraction, light waves are bent on passing from one medium to second medium because, in the second medium2021Refraction of light from plane surface
  25. 25If the refractive index from air to glass is and that from air to water is , then the ratio of focal lengths of a glass lens in water and in2021Lens Formula, Refraction of light from curved surface
  26. 26Two thin biconvex lenses have focal lengths and . A third thin biconcave lens has focal length of . If the two biconvex lenses are in contac2021Combination of Lens and Mirrors
  27. 27The size of the image of an object, which is at infinity, as formed by a convex lens of focal length is . If a concave lens of focal length 2021Mirror Formula, Reflection in Spherical Mirror
  28. 28An object approaches a convergent lens from the left of the lens with a uniform speed and stops at the focus, the image2020Lens Formula, Refraction of light from curved surface
  29. 29The refracting angle of prism is and refractive index of material of prism is . The angle of minimum deviation is2020Prism and Dispersion of Light
  30. 30The following figure shows a beam of light converging at point . When a concave lens of focal length is introduced in the path of the beam a2020Lens Formula, Refraction of light from curved surface
  31. 31Two poles are separated by a distance of . The resolving power of human eye is of an arc. The maximum distance from which he can identify th2020Human eye
  32. 32A Point object is moving uniformly towards the pole of a concave mirror of focal length \( 25 {~cm} \) along its axis as shown below. The sp2019Mirror Formula, Reflection in Spherical Mirror
  33. 33A certain prism is found to produce a minimum deviation of \( 38^{ } . \) It produces a deviation of \( 44^{ } \) when the angle of incidenc2019Prism and Dispersion of Light
  34. 34An object is placed at the principle focus of a convex mirror. The image will be at2018Mirror Formula, Reflection in Spherical Mirror
  35. 35An object is placed at a distance of \( 20 {~cm} \) from the pole of a concave mirror of focal length \( 10 \) \( {cm} \). The distance of t2018Mirror Formula, Reflection in Spherical Mirror
  36. 36A candle placed \( 25 {~cm} \) from a lens forms an image on a screen placed \( 75 {~cm} \) on the other side of the lens. The focal length 2018Lens Formula, Refraction of light from curved surface
  37. 37In metre bridge experiment, with a standard resistance in the right gap and a resistance coil dipped in water (in a beaker) in the left gap,2017Mirror Formula, Reflection in Spherical Mirror
  38. 38A proton, a deuteron and an \( \) - particle are projected perpendicular to the direction of a uniform magnetic field with same kinetic ener2017Mirror Formula, Reflection in Spherical Mirror
  39. 39A plane glass plate is placed over a various coloured letters (violet, green, yellow, red). The letter which appears to raised more2016Refraction of light from plane surface
  40. 40A ray of light passes through four transparent media with refractive index \( n_{1}, n_{2}, n_{3} \) and \( n_{4} \) as shown. The surfaces 2016Refraction of light from plane surface
  41. 41Focal length of a convex lens is \( 20 {~cm} \) and its (RI) is \( 1.5 \). It produces an erect, enlarged image if the distance of the objec2016Lens Formula, Refraction of light from curved surface
  42. 42A ray of light suffers a minimum deviation when incident on an equilateral prism of refractive index \( {2} \). The angle of incidence is2016Prism and Dispersion of Light
  43. 43For what distance is ray optics is good approximation when the aperture is \( 4 {~mm} \) and the wavelength of light is \( 400 {~nm} \) ?2016Optical Instruments
  44. 44Light of two different frequencies whose photons have energies \( 1 {eV} \) and \( 2.5 {eV} \) respectively, successively illuminate a metal2015Lens Formula, Refraction of light from curved surface
  45. 45Find the de-Broglie wavelength of an electron with kinetic energy of \( 120 {eV} \).2015Mirror Formula, Reflection in Spherical Mirror
  46. 46In anomalous expansion of water, at what temperature, the density of water is maximum ?2014Mirror Formula, Reflection in Spherical Mirror
  47. 47An aeroplane executes a horizontal loop at a speed of \( 720 {kmph} \) with its wings banked at \( 45^{ } \). What is the radius of the loop2014Lens Formula, Refraction of light from curved surface
  48. 48A body having a moment of inertia about its axis of rotation equal to \( 3 {~kg} {~m}^{2} \) is rotating with angular velocity of \( 3 {rad}2014Optical Instruments
  49. 49An object is placed at \( 20 {~cm} \) in front of a concave mirror produces three times magnified real image. What is focal length of the co2014Optical Instruments
  50. 50The speed of light in media and are and respectively. A ray travels from medium to the medium with an angle of incidence . The ray suffers t2013Critical angle and total internal reflection

Frequently Asked Questions

1.How many questions are available for Ray Optics?

This chapter includes 85 questions compiled from KCET papers spanning 2007 to 2026.

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

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

3.Is Ray Optics an important chapter for KCET Physics?

Ray Optics has appeared in 20 of the 20 years of KCET papers covered here, with 85 questions across 20 papers - about 4 per paper it appears in.

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

Of the 85 questions analysed for this chapter, 34% are easy, 45% moderate and 21% tough. 2009 had the most, with 6 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 - 21 questions (25%)
  • Refraction of light from plane surface - 19 questions (22%)
  • Prism and Dispersion of Light - 14 questions (16%)
  • Refraction of light from plane surface has produced the most tough questions (8).
6.Is Ray Optics's weightage in KCET going up or down?

Across all 20 papers analysed, Ray Optics has averaged about 4.3 questions per paper. In the last three years (2024–2026), that average has stayed about the same, at about 4.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.