JEE Main · Physics

Wave optics

18 practice questions, each with the answer and an explanation.

Practise Wave optics now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 18 questions

  1. In a Young's double-slit experiment, the slit separation is , the distance from slits to screen is , and monochromatic light of wavelength…
  2. Two coherent monochromatic light beams have an intensity ratio of . When these beams interfere, what is the ratio of maximum intensity to minimum intensity () in…
  3. What happens to the fringe width in a Young's double-slit experiment if the entire experimental apparatus is completely immersed in water of refractive index ?
  4. In a single-slit Fraunhofer diffraction experiment, a slit of width is illuminated by light of wavelength . If the screen is placed at a distance…
  5. Unpolarized light of intensity is incident on a linear polarizer. The transmitted light then passes through a second polarizer (analyzer) whose transmission axis is oriented at an angle of…
  6. When a thin transparent mica sheet of thickness and refractive index is introduced into the path of one of the interfering beams in a Young's double-slit experiment, by what distance is the ce…
  7. What is the angular resolution limit of an astronomical telescope having an objective aperture diameter observing light of wavelength (Rayleig…
  8. In a Young's double-slit experiment, the path difference between two interfering light waves at a point on the screen is . What is the ratio of the intensity at this point to t…
  9. What type of wavefront is produced by a distant celestial star observed through a terrestrial telescope?
  10. Which of the following optical phenomena demonstrates unequivocally that light is a transverse wave rather than a longitudinal wave?
  11. In a Young's double-slit experiment, if the distance between the two slits is doubled () and the distance to the screen is halved (), by what factor does the fringe width change?
  12. What is Brewster's angle for light reflecting from the surface of water ()?
  13. Two waves of identical frequency have amplitudes and and arrive at a point with a phase difference of (). What is the resultant ampli…
  14. In a Young's double-slit experiment, monochromatic light of wavelength produces fringes. At a point on the screen where the path difference is , what is the nature of…
  15. What is the shape of the interference fringes formed on a flat screen in Young's double-slit experiment?
  16. In Fraunhofer diffraction by a single slit of width , what is the condition for the angular positions of diffraction MINIMA?
  17. Two polarizing filters have their transmission axes crossed at so that zero light is transmitted. When a third polarizer is inserted between them with its transmission axis oriented at…
  18. What is the primary factor limiting the maximum resolving power of an optical microscope?

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