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Physics - Wave Optics

Practise 273 MHTCET previous year questions on Wave 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 MHTCET tests.

Wave Optics has been asked in 15 of the 17 years of MHTCET papers analysed (2007–2026), with 273 questions in all. 38% of them were easy, 55% moderate and 7% tough. Most of its questions came from 2025, with 46 questions that year. In the last three years (2024–2026) it had 131 questions across 59 papers, about 2.2 per paper.

The chapter's 6 topics are not weighted equally: Youngs Double Slit Experiment (136 questions, 50%), Diffraction of Light (62 questions, 23%), and Interference of Light (36 questions, 13%) have been asked the most. Youngs Double Slit Experiment has also led over the last five years, with 99 questions. Youngs Double Slit Experiment has produced the most tough questions (13).

  1. 1In a biprism experiment, the distance between and bright band on the same side is ' ' when light of wavelength Å is used. For a light of wav20 Apr, 2026 (M)Youngs Double Slit Experiment
  2. 2In an interference experiment, the bright fringe for light of wavelength coincides with the dark fringe for light of wavelength . The ratio 20 Apr, 2026 (M)Youngs Double Slit Experiment
  3. 3Light of wavelength nm is incident normally on a slit of width ' '. The distance between slit and screen is m and the distance of the second20 Apr, 2026 (M)Diffraction of Light
  4. 4In the diffraction pattern, the first maximum is at , when a monochromatic light of wavelength is incident on a slit of width . For the same20 Apr, 2026 (E)Diffraction of Light
  5. 5To improve the resolving power of a compound microscope we should20 Apr, 2026 (E)Diffraction of Light
  6. 6In diffraction experiment from single slit, the angular width of the central maxima does NOT depend upon20 Apr, 2026 (E)Diffraction of Light
  7. 7In Young's double slit experiment, for the dark fringe ( ) the phase difference of the interfering waves in radian will be19 Apr, 2026 (M)Youngs Double Slit Experiment
  8. 8In a single slit diffraction pattern, the distance between the plane of the slit and the screen is m. The width of the slit is mm. The secon19 Apr, 2026 (M)Diffraction of Light
  9. 9In Young's double slit experiment, the wavelength of light used is . The intensity on the screen at a point for path difference ' ' is 'X'. 19 Apr, 2026 (M)Interference of Light
  10. 10In biprism experiment, the maximum intensity is . If the path difference between the two interfering waves is , then intensity at the point 19 Apr, 2026 (E)Interference of Light
  11. 11A ray of light is incident at polarising angle on air-glass interface. If and are the wavelengths of light in air and glass respectively the19 Apr, 2026 (E)Polarization of Light
  12. 12In a biprism experiment, a steady interference pattern is observed on the screen kept at a distance of 100 cm using a light of wavelength Å.19 Apr, 2026 (E)Young's Double Slit Experiment
  13. 13In a Fraunhofer diffraction of a single slit, when a slit is illuminated by a light of wavelength , angular width of central maximum is meas18 Apr, 2026 (M)Diffraction of Light
  14. 14In a certain region of the screen, number of fringes formed is observed to be 8 in Young's double slit experiment when light of wavelength i18 Apr, 2026 (M)Youngs Double Slit Experiment
  15. 15When a glass plate of refractive index is introduced in the path of one of the interfering beams, the fringes are displaced by a distance ' 18 Apr, 2026 (M)Youngs Double Slit Experiment
  16. 16In an optical instrument- microscope, the wavelength of light used are Å and Å. The ratio of the resolving power of microscope corresponding18 Apr, 2026 (E)Diffraction of Light
  17. 17A plane wavefront of width , is incident on an air-water interface and the corresponding refracted wavefront has a width y as shown in figur18 Apr, 2026 (E)Wave Theory and Wavefronts
  18. 18In a biprism experiment, fifth dark fringe is obtained at a point. A thin transparent film of refractive index ' ' is placed in one of the i18 Apr, 2026 (E)Interference of Light
  19. 19In a single slit diffraction experiment, for wavelength ' ', half angular width of the principal maxima is ' '. Also for wavelength of light17 Apr, 2026 (M)Diffraction of Light
  20. 20In Young's double slit experiment, width of the second slit is double the width of first slit, consequently the amplitude of the light from 17 Apr, 2026 (M)Youngs Double Slit Experiment
  21. 21For obtaining maximum contrast between the bright and dark fringes in an interference pattern, the intensities of the two light coherent sou17 Apr, 2026 (E)Interference of Light
  22. 22In Young's experiment, the intensity ratio of the maxima and minima in an interference pattern produced by two coherent sources is . The rat17 Apr, 2026 (E)Youngs Double Slit Experiment
  23. 23An unpolarised light of intensity passes through three polarizers successively such that the transmission axis of last polarizer is crossed 17 Apr, 2026 (E)Polarization of Light
  24. 24In Young's double slit experiment, the distance between the slits is 3 mm and the slits are 2m away from the screen. Two interference patter16 Apr, 2026 (M)Youngs Double Slit Experiment
  25. 25The ratio of intensities at two points on the screen in Young's double slit experiment when waves from the two slits have a path difference 16 Apr, 2026 (M)Youngs Double Slit Experiment
  26. 26In Young's double slit experiment, the fringe width is 0.4 mm. What is the distance between dark band and bright band on the same side of th16 Apr, 2026 (M)Youngs Double Slit Experiment
  27. 27In Young's double slit experiment, two slits are illuminated with a light of wavelength . The line joining is perpendicular to as shown in f16 Apr, 2026 (E)Youngs Double Slit Experiment
  28. 28Three identical polaroids , and are placed one after another. The pass axis of and are inclined at angle of and with respect to axis of . Th16 Apr, 2026 (E)Polarization of Light
  29. 29Light of wavelength is incident on a single slit of width 'a' and the distance between slit and screen is D. In diffraction pattern, if slit15 Apr, 2026 (M)Diffraction of Light
  30. 30When the distance of separation between the slit and screen is doubled, the angular separation between fringes in single slit diffraction pa15 Apr, 2026 (M)Diffraction of Light
  31. 31Light of wavelength is incident on a single slit of width 'a' and the distance between slit and screen is 'D'. In diffraction pattern, if sl15 Apr, 2026 (E)Diffraction of Light
  32. 32A double slit experiment is immersed in water of refractive index . The slit separation is 1 mm, distance between slit and screen is m. The 15 Apr, 2026 (E)Youngs Double Slit Experiment
  33. 33According to corpuscular theory of light, Which is NOT the property of light?13 Apr, 2026 (M)Wave Theory and Wavefronts
  34. 34In Young's double slit experiment, the angular width of a fringe is found to be on a screen placed 1m away. The wavelength of light used in 13 Apr, 2026 (M)Youngs Double Slit Experiment
  35. 35Choose the correct statement from the following. Brewster's angle for a transparent medium is13 Apr, 2026 (M)Polarization of Light
  36. 36In Young's double slit experiment, two slits and are 'd' distance apart and the separation from slits to screen is . Now if two transparent 13 Apr, 2026 (E)Youngs Double Slit Experiment
  37. 37'n' polarizing sheets are arranged such that each makes an angle with the preceding sheet. An unpolarized light of intensity is incident int13 Apr, 2026 (E)Polarization of Light
  38. 38In Young's double slit experiment, following figure shows that is the position of second bright fringe on the right side of point . is the e13 Apr, 2026 (E)Youngs Double Slit Experiment
  39. 39Two light waves amplitudes in the ratio produce interference. The ratio of the maximum to minimum intensity is11 Apr, 2026 (M)Interference of Light
  40. 40In a Young's double slit experiment, the intensities at two points, for the path difference and ( being the wavelength of light used) are an11 Apr, 2026 (M)Youngs Double Slit Experiment
  41. 41Two polaroid A and B placed in such a way that the pass-axis of polaroid are perpendicular to each other. Now, another polaroid C is placed 11 Apr, 2026 (M)Polarization of Light
  42. 42A ray of light is incident of the surface of a glass plate at an angle of incidence equal to Brewster's angle . If denotes the refractive in11 Apr, 2026 (M)Polarization of Light
  43. 43Converging lens of telescope cm in diameter has focal length cm. In the focal plane of the lens the distance between the centres of the Frau11 Apr, 2026 (E)Diffraction of Light
  44. 44In Young's double slit experiment, in an interference pattern, a minimum is observed exactly in front of one slit. The distance between the 11 Apr, 2026 (E)Youngs Double Slit Experiment
  45. 45In biprism experiment, the dark band is formed opposite to one of the slits. The wavelength of light used is (D=distance between source and 11 Apr, 2026 (E)Youngs Double Slit Experiment
  46. 46A beam of light of intensity falls on a system of three polaroids which are arranged in succession such that the pass (transmission) axis is05 May, 2025 (E)Polarization of Light
  47. 47In Young's double slit experiment, the intensity on screen at a point, where path difference is is . The intensity at a point when path diff05 May, 2025 (E)Youngs Double Slit Experiment
  48. 48A ray of light is incident at polarising angle ' ' on air-glass interface, if ' ' and ' ' are the wavelengths of light in air and glass resp27 Apr, 2025 (E)Polarization of Light
  49. 49In Young's double slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled. 27 Apr, 2025 (E)Youngs Double Slit Experiment
  50. 50In a biprism experiment, the distance of the second dark fringe from the central fringe is 3 mm . The distance of the sixth bright fringe fr27 Apr, 2025 (E)Youngs Double Slit Experiment

Frequently Asked Questions

1.How many questions are available for Wave Optics?

This chapter includes 273 questions compiled from MHTCET papers spanning 2007 to 2026.

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

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

3.Is Wave Optics an important chapter for MHTCET Physics?

Wave Optics has appeared in 15 of the 17 years of MHTCET papers covered here, with 273 questions across 105 papers - about 3 per paper it appears in.

4.What is the difficulty level of Wave Optics questions in MHTCET?

Of the 273 questions analysed for this chapter, 38% are easy, 55% moderate and 7% tough. 2025 had the most, with 46 questions.

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

These topics have carried the most weightage in Wave Optics:

  • Youngs Double Slit Experiment - 136 questions (50%)
  • Diffraction of Light - 62 questions (23%)
  • Interference of Light - 36 questions (13%)
  • Youngs Double Slit Experiment has produced the most tough questions (13).
6.Is Wave Optics's weightage in MHTCET going up or down?

Across all 105 papers analysed, Wave Optics has averaged about 2.6 questions per paper. In the last three years (2024–2026), that average has stayed about the same, at about 2.2 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.