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Wave Optics

CBSE Class 12 · Physics · 18 past questions

  1. Q1 2026
    The phase difference between the two superimposing waves that give rise to a bright spot in a Young's…
  2. Q2 2026
    The shape of the interference fringes in Young's double-slit experiment, when the distance between the slit…
  3. Q3 2026
    A beam of light consisting of two wavelengths 400 nm and 600 nm is used to illuminate a single slit of width…
  4. Q4 2026
    Assertion (A) : Light added to light can produce darkness.…
  5. Q5 2025
    Questions number 13 to 16 are Assertion (A) and Reason (R) type questions. Two statements are given — one…
  6. Q6 2025
    A double slit set-up was initially placed in a tank filled with water and the interference pattern was…
  7. Q7 2025
  8. Q8 2025
    For Questions 13 to 16, two statements are given – one labelled Assertion (A) and other labelled Reason (R).…
  9. Q9 2025
    In a double-slit experiment, 6$^{th}$ dark fringe is observed at a certain point of the screen. A transparent…
  10. Q10 2025
  11. Q11 2025
    In a diffraction experiment, the slit is illuminated by light of wavelength 600 nm. The first minimum of the…
  12. Q12 2023
    A beam of light travels from air into a medium. Its speed and wavelength in the medium are $1.5 \times 10^8$…
  13. Q13 2023
    What happens to the interference pattern when two coherent sources are
  14. Q14 2023
    Assertion (A) : In Young's double slit experiment all fringes are of equal width.…
  15. Q15 2023
    In the wave picture of light, the intensity I of light is related to the amplitude A of the wave as…
  16. Q16 2023
    In a single-slit diffraction experiment, the width of the slit is halved. The width of the central maximum…
  17. Q17 2023
    Questions number 16 to 18 are Assertion (A) and Reason (R) type questions. Two statements are given — one…
  18. Q18 2023
    Two coherent monochromatic light beams of intensities I and 4I superpose each other. Find the ratio of…