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Physics - Wave Optics

Practise 28 MHT-CET (PCB) previous year questions on Wave Optics, compiled from papers in 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty MHT-CET (PCB) tests.

Wave Optics has been asked in 1 of the 1 years of MHT-CET (PCB) papers analysed (2026), with 28 questions in all. 32% of them were easy, 68% moderate and 0% tough. Most of its questions came from 2026, with 28 questions that year. In 2026 it had 28 questions across 11 papers, about 2.5 per paper.

The chapter's 5 topics are not weighted equally: Youngs Double Slit Experiment (9 questions, 32%), Diffraction of Light (6 questions, 21%), and Polarization of Light (6 questions, 21%) have been asked the most.

  1. 1In the Young's double slit experiment, the intensity of light at a point on the screen is 'K', being the wavelength of light used. The inten26 Apr, 2026 (M)Youngs Double Slit Experiment
  2. 2For Young's double slit experiment, two statements are given below. Statement I: In the interference pattern, energy is not destroyed at the25 Apr, 2026 (M)Interference of Light
  3. 3The Brewster's angle for air-glass interface should be such that (refractive index of glass )25 Apr, 2026 (M)Polarization of Light
  4. 4In a single-slit Fraunhofer diffraction experiment, the first secondary minimum is observed at an angle of for light of wavelength . If the 25 Apr, 2026 (M)Diffraction of Light
  5. 5The path difference between the two waves and is25 Apr, 2026 (E)Interference of Light
  6. 6Two images are considered "just resolved" according to Rayleigh's criterion when25 Apr, 2026 (E)Diffraction of Light
  7. 7An unpolarized light beam of intensity passes through a series of Polaroids . The pass axis of each poloroid makes an angle of with the othe25 Apr, 2026 (E)Polarization of Light
  8. 8In Young's double slit experiment using a monochromatic light of wavelength . The path difference (in terms of an integer n) corresponding t24 Apr, 2026 (M)Youngs Double Slit Experiment
  9. 9In Young's double slit, 18 fringes are observed to be formed in a certain segment of the screen when light of wavelength 400 nm is used. If 24 Apr, 2026 (M)Youngs Double Slit Experiment
  10. 10A parallel beam of light of intensity I is incident on a glass plate. of light is reflected by upper surface and of light is reflected from 24 Apr, 2026 (E)Interference of Light
  11. 11In Young's double slit experiment, the slits are apart and are illuminated by photons of two wavelengths and one after the other. At what mi24 Apr, 2026 (E)Youngs Double Slit Experiment
  12. 12When the un-polarised light beam is incident from air to glass at the Brewster's angle,24 Apr, 2026 (E)Polarization of Light
  13. 13An interference is observed due to two coherent sources, A and B, separated by a distance along the Y-axis, where is the wavelength of the s23 Apr, 2026 (M)Interference of Light
  14. 14Four polaroids are placed at an angle with the optic axis of the preceding one. If unpolarised light of intensity 'I' falls on the first pol23 Apr, 2026 (M)Polarization of Light
  15. 15In Young's double-slit experiment, the intensity at a point is of the maximum intensity. The angular position of this point is = wavelength 23 Apr, 2026 (E)Youngs Double Slit Experiment
  16. 16In a diffraction pattern due to a single slit of width a, the first minimum is observed at an angle when light of wavelength Å is incident o23 Apr, 2026 (E)Diffraction of Light
  17. 17Two coherent sources of intensity ratio interfere. In interference pattern, is23 Apr, 2026 (E)Youngs Double Slit Experiment
  18. 18Young's double slit experiment is carried out by using green, red and blue light, one colour at a time. The fringewidths recorded are , and 22 Apr, 2026 (M)Youngs Double Slit Experiment
  19. 19A ray of light from a monochromatic point source of light is incident at a point on the screen. If a thin mica film of thickeness 't' and re22 Apr, 2026 (M)Wave Theory and Wavefronts
  20. 20When light waves travel from rarer medium to denser medium, the qunatities which get changed are22 Apr, 2026 (M)Wave Theory and Wavefronts
  21. 21Which of the following condition is TRUE for Fresnel diffraction? (i) Source of light and the obstacle (slit) are at large distance (infinit22 Apr, 2026 (E)Diffraction of Light
  22. 22Unpolarized light of intensity is made to pass through three polarizers , and successively. The polarization axis of makes an angle of with 22 Apr, 2026 (E)Polarization of Light
  23. 23The condition for observing Fraunhofer diffraction from a single slit is that the wavefront incident on a single slit must be21 Apr, 2026 (M)Diffraction of Light
  24. 24The equation of two interfering light waves are and . If the light waves interfere destructively, then the possible value of are21 Apr, 2026 (M)Interference of Light
  25. 25A unpolarized beam of light having flux W falls normally on a rotating polarizer of cross-sectional area . If the energy of light passing th21 Apr, 2026 (M)Polarization of Light
  26. 26In Young's double slit experiment, in an interference pattern, third minimum is observed exactly in front of one of the slits. If ' ' is the21 Apr, 2026 (E)Youngs Double Slit Experiment
  27. 27In Young's double slit experiment, the intensity on screen at a point, where path difference is ' ', is ' '. The intensity at a point when p21 Apr, 2026 (E)Youngs Double Slit Experiment
  28. 28In a single slit diffraction pattern, identify the incorrect statement from the following21 Apr, 2026 (E)Diffraction of Light

Frequently Asked Questions

1.How many questions are available for Wave Optics?

This chapter includes 28 questions compiled from MHT-CET (PCB) papers in 2026.

2.Are these questions only from MHT-CET (PCB), or from other exams too?

These are MHT-CET (PCB) questions specifically for the Wave Optics chapter. Questions from other exams like NEET or AIIMS are organised separately under their respective exam sections.

3.Is Wave Optics an important chapter for MHT-CET (PCB) Physics?

Wave Optics has appeared in 1 of the 1 year of MHT-CET (PCB) papers covered here, with 28 questions across 11 papers - about 3 per paper it appears in.

4.What is the difficulty level of Wave Optics questions in MHT-CET (PCB)?

Of the 28 questions analysed for this chapter, 32% are easy, 68% moderate and 0% tough. 2026 had the most, with 28 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 - 9 questions (32%)
  • Diffraction of Light - 6 questions (21%)
  • Polarization of Light - 6 questions (21%)
6.Is Wave Optics's weightage in MHT-CET (PCB) going up or down?

Across all 11 papers analysed, Wave Optics has averaged about 2.5 questions per paper. In 2026, that average has stayed about the same, at about 2.5 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.