Physics · 2026
JEE Main · 21 January 2026, Shift 2 · Q42
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…
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 moved away from the plane of the slits
Statement II : In a Young's double slit experiment, the angular separation of fringes will increase when monochromatic source is replaced by another monochromatic source of higher wavelength
In the light of the above statements, choose the correct answer from the options given below :
Official answer
From NTA’s final answer key for this paper.
(2)
Statement I is false but Statement II is true
More from Wave Optics
- 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
- 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
- An unpolarized light is incident on the plane interface of air-dielectric medium shown in figure. If the incident angle is equal to Brewster angle,…2026
- In single slit diffraction pattern, the wavelength of light used is 628 nm and slit width is 0.2 mm, the angular width of central maximum is α ×…2026
- Some distant star is to be observed by some telescope of diameter of objective lens a, at an angular resolution of 3.0 × 10^-7 radian. If the…2026
- In a double slit experiment, when one of the slits is covered by a transparent mica sheet of refractive index 1.56, the central fringe shifts to the…2026
- In a Young's double slit experiment, the intensity at some point on the screen is found to be 3/4 times of the maximum of the interference pattern.…2026
JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.