✓ Board-verified
Physics · 2024 · 1 mark
CBSE 2024 · Region 5 · Set 1 · Q15
Assertion (A): In a Young's double-slit experiment, interference pattern is not observed when two coherent sources are infinitely close to each…
Assertion (A) : In a Young's double-slit experiment, interference pattern is not observed when two coherent sources are infinitely close to each other.
Reason (R) : The fringe width is proportional to the separation between the two sources.
Official answer
(C)
If Assertion (A) is true but Reason (R) is false.
More from Wave Optics
- Define 'wavefront' of a light wave. A plane wavefront is refracted from a convex lens. Draw the shape of the refracted wavefront. A plane wave…2025
- A double slit set-up was initially placed in a tank filled with water and the interference pattern was obtained using a laser light. When water is…2025
- The phenomenon of interference is shown by2026
- Assertion: In interference and diffraction of light, light energy reduces in one region producing a dark fringe. It increases in another region and…2024
- Using the Huygens' principle, briefly describe reflection of a plane wavefront from a reflecting surface. Hence, prove the laws of reflection.2025
- (i) Give any two differences between the interference pattern obtained in Young's double-slit experiment and a diffraction pattern due to a single…2024
- A plane wave-front propagating in a medium of refractive index ' μ_1 ' is incident on a plane surface making an angle of incidence (i). It enters…2023
- A beam of light consisting of two wavelengths 600 nm and 500 nm is used in a Young's double slit experiment. The slit separation is 1.0 mm and the…2022
CBSE Class 12 Physics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.