Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Wave Optics question

2022 · 28 Jul · Shift 1 · Q65
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Wave Optics
  5. /2022 · 28 Jul · Shift 1 · Q65

Wave Optics question

2022 · 28 Jul · Shift 1 · Q65

JEE MainPhysicsWave OpticsNumerical+4 / −1
In a Young's double slit experiment, a laser light of 560 nm produces an interference pattern with consecutive bright fringes' separation of 7.2 mm. Now another light is used to produce an interference pattern with consecutive bright fringes' separation of 8.1 mm. The wavelength of second light is ‾\underline{\hspace{2cm}}​ nm.
Numerical answer
PreviousNext

More from Wave Optics

  • In Young's double slit experiment performed using a monochromatic light of wavelength λ, when a glass plate (μ = 1.5) of thickness x λ is introduced in the path of the one of the interfering beams, the intensity at the…2022 · MCQ
  • In a Young's double slit experiment, an angular width of the fringe is 0.35 ∘ on a screen placed at 2 m away for particular wavelength of 450 nm. The angular width of the fringe, when whole system is immersed in a medium of…2022 · Numerical
  • Two light beams of intensities 4I and 9I interfere on a screen. The phase difference between these beams on the screen at point A is zero and at point B is π. The difference of resultant intensities, at the point A and B, will be ​…2022 · Numerical
  • An unpolarised light beam of intensity 2I0​ is passed through a polaroid P and then through another polaroid Q which is oriented in such a way that its passing axis makes an angle of 30∘ relative to that of P. The intensity…2022 · MCQ
  • Using Young's double slit experiment, a monochromatic light of wavelength 5000 Ao​ produces fringes of fringe width 0.5 mm. If another monochromatic light of wavelength 6000 Ao​ is used and the separation…2022 · MCQ
  • In a double slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the plane of slits. If the screen is moved by 5 × 10 − 2 m towards the slits, the change in fringe width is 3 ×…2022 · Numerical
  • Find the ratio of maximum intensity to the minimum intensity in the interference pattern if the widths of the two slits in Young's experiment are in the ratio of 9 : 16. (Assuming intensity of light is directly proportional to the width of…2022 · MCQ
  • The width of one of the two slits in a Young's double slit experiment is three times the other slit. If the amplitude of the light coming from a slit is proportional to the slit-width, the ratio of minimum to maximum intensity in the…2021 · Numerical