Physics · 2025
JEE Main · 24 January 2025, Shift 2 · Q42
Young's double slit inteference apparatus is immersed in a liquid of refractive index 1.44. It has slit separation of 1.5 mm. The slits are…
Young's double slit inteference apparatus is immersed in a liquid of refractive index 1.44. It has slit separation of $\displaystyle 1.5$ mm. The slits are illuminated by a parallel beam of light whose wavelength in air is $\displaystyle 690$ nm . The fringe-width on a screen placed behind the plane of slits at a distance of $\displaystyle 0.72$ m , will be :
Official answer
From NTA’s final answer key for this paper.
(4)
0.$\displaystyle 23$ mm
More from Wave Optics
- If the measured angular separation between the second minimum to the left of the central maximum and the third minimum to the right of the central…2025
- In interference experiment the path difference between two interfering waves at a point A on the screen is λ / 3, where λ is the wavelength of these…2026
- Given below are two statements: Statement I: In a Young's double slit experiment, the angular separation of fringes will increase as the screen is…2026
- When an unpolarized light falls at a particular angle on a glass plate (placed in air), it is observed that the reflected beam is linearly polarized.…2026
- Given below are two statements: Statement I: A plane wave after passing through prism remains as plane wave but passing through small pin hole may…2026
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason (R). Assertion: In Young's double slit experiment,…2025
- In Young's double slit experiment, the fringe width of the interference pattern produced on the screen is 2.4 μ m. If the experiment is carried out…2026
- The maximum intensity in a Young's double slit experiment is I_o. Distance between the slits (d) is 5 λ, where λ is the wavelength of light used. The…2026
JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.