JEE Physics

Interference (Young's Experiment): JEE Questions & Solutions

32 previous-year JEE Physics questions on Interference (Young's Experiment), each with a worked step-by-step solution.

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Previous-year questions

  1. 01In a double slit experiment the distance between the slits is 0.1 cm and the screen is placed at 50 cm from the slits plane. When one slit…MCQEasyJEE 2026
  2. 02Given below are two statements: Statement I: In a Young's double slit experiment, the angular separation of fringes will increase as the…MCQEasyJEE 2026
  3. 03In a Young's double slit experiment set up, the two slits are kept 0.4 mm apart and screen is placed at 1 m from slits. If a thin…NVAEasyJEE 2026
  4. 04In two separate Young's double-slit experimental set-ups and two monochromatic light sources of different wavelengths are used to get…NVAEasyJEE 2026
  5. 05In the Young's double slit experiment the intensity produced by each one of the individual slits is I₀. The distance between two slits is 2…MCQEasyJEE 2026
  6. 06A beam of light consisting of wavelengths 650 nm and 550 nm illuminates Young’s double slits with separation d=2 mm such that the…NVAMediumJEE 2026
  7. 07Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): If Young’s double…MCQEasyJEE 2025
  8. 08Given below are two statements, one labeled as Assertion (A) and the other as Reason (R). Assertion (A): In Young’s double slit experiment,…MCQEasyJEE 2025
  9. 09The width of one of the two slits in Young's double-slit experiment is d while that of the other slit is xd. If the ratio of the maximum to…MCQMediumJEE 2025
  10. 10The Young's double slit interference experiment is performed using light consisting of 480 nm and 600 nm wavelengths to form interference…MCQEasyJEE 2025
  11. 11Young's double slit interference apparatus is immersed in a liquid of refractive index 1.44. It has slit separation of 1.5 mm. The slits…MCQEasyJEE 2025
  12. 12A double slit interference experiment performed with a light of wavelength 600 nm forms an interference fringe pattern on a screen with…NVAEasyJEE 2025
  13. 13A thin transparent film with refractive index 1.4 is held on a circular ring of radius 1.8 cm. The fluid in the film evaporates such that…NVAMediumJEE 2025
  14. 14Two coherent monochromatic light beams of intensities 4I and 9I are superimposed. The difference between the maximum and minimum…NVAEasyJEE 2025
  15. 15Width of one of the two slits in a Young's double slit interference experiment is half of the other slit. The ratio of the maximum to the…MCQEasyJEE 2025
  16. 16Two monochromatic light beams have intensities in the ratio 1:9. An interference pattern is obtained by these beams. The ratio of the…MCQEasyJEE 2025
  17. 17In a Young's double slit experiment, the slits are separated by 0.2 mm. If the slits separation is increased to 0.4 mm, the percentage…MCQEasyJEE 2025
  18. 18In a Young's double slit experiment, two slits are located 1.5 mm apart. The distance of screen from slits is 2 m and the wavelength of the…NVAMediumJEE 2025
  19. 19Two plane polarized light waves combine at a certain point whose electric field components are E₁ = E₀ sin(ω t) E₂ = E₀ sin(ω t + π/3) Find…MCQEasyJEE 2025
  20. 20In a Young's double slit experiment, the source is white light. One of the slits is covered by red filter and another by green filter. In…MCQEasyJEE 2025
  21. 21In a double slit experiment shown in the figure, when light of wavelength 400 nm is used, a dark fringe is observed at P. If D = 0.2 m, the…NVAMediumJEE 2024
  22. 22In Young’s double slit experiment, light from two identical sources is superimposing on a screen. The path difference between the two…MCQEasyJEE 2024
  23. 23Monochromatic light of wavelength 500 nm is used in Young's double-slit experiment. When one slit is covered with a glass plate (refractive…MCQEasyJEE 2024
  24. 24In Young's double-slit experiment, the position of the 5^th bright fringe from the central maximum is 5 cm. The distance between slits and…MCQEasyJEE 2023
  25. 25In a Young's double slit experiment, two slits A₁ and A₂, separated by a, are illuminated with light of wavelength 800 nm. The point P on…MCQMediumJEE 2023
  26. 26In a Young’s double slit experiment, the intensities at two points, for the path difference λ/4 and λ/3 (where λ is the wavelength of light…NVAMediumJEE 2023
  27. 27Two light waves of wavelengths 800 nm and 600 nm are used in Young's double slit experiment to obtain interference fringes on a screen…NVAMediumJEE 2023
  28. 28In Young's double slit experiment the two slits are S₁ (upper) and S₂ (lower), cut in a barrier, and the pattern is observed at a point P…NVAEasyJEE 2023
  29. 29Given below are two statements: one is labelled as assertion A and the other is labelled as Reason R. Assertion A: The phase difference of…MCQEasyJEE 2023
  30. 30A beam of light consisting of two wavelengths 7000 Å and 5500 Å is used to obtain interference pattern in Young's double slit experiment.…NVAMediumJEE 2023
  31. 31The ratio of intensities at two points P and Q on the screen in a Young's double slit experiment where phase difference between two waves…MCQEasyJEE 2023
  32. 32In a Young's double slits experiment, the ratio of amplitude of light coming from slits is 2: 1. The ratio of the maximum to minimum…MCQEasyJEE 2023

Frequently asked questions

Our bank has 32 previous-year JEE Physics questions tagged to Interference (Young's Experiment), drawn from JEE papers between 2023 and 2026, including 6 from 2026 alone. Each comes with a full step-by-step solution.

Interference (Young's Experiment) is rated Advanced overall for JEE Physics. The PYQs on this page break down as 23 easy, 9 medium.

Of the 32 previous-year questions on Interference (Young's Experiment), 20 are multiple-choice (MCQ) and 12 are numerical-value (NVA) questions.

Based on recent paper analysis, Interference (Young's Experiment) is worth about 2 marks in JEE Main. It sits in Optics, a Class 12 Physics chapter.

More Optics topics

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