JEE Main Physics · Wave Optics

YDSE Fringe Width

YDSE Fringe Width (Wave Optics) was asked 7 times in 7 JEE Main shifts, 2020–2023, out of the 42 shifts Lumi analysed. 3 of the 7 had a numerical answer.

Times asked: 7; in 7 shifts
Years: 2020–2023
Usual format: Single correct; Calculation
Pattern: Comes in cycles; repeats across shifts

How it is asked

Distance between fringes in ydse
Fringe width variation with slit separation

Difficulty

Easy 6Medium 1Hard 0

Where it sits

Chapter: Wave Optics. Topic: Young's Double Slit, 27 questions over 11 ideas.

All 7 questions

Newest first, each with its options and official answer.

8 Apr 2023, Shift 2 · Q46The width of fringe is 2 mm on the screen in a double slits experiment for the light of wavelength of 400 nm. The width of the fringe for…EasySingle correct
28 Jul 2022, Shift 1 · Q53In a Young's double slit experiment, a laser light of 560 nm produces an interference pattern with consecutive bright fringes' separation…EasyNumerical value
29 Jun 2022, Shift 1 · Q49Using Young's double slit experiment, a monochromatic light of wavelength 5000 $\mathrm{\AA}$ produces fringes of fringe width 0.5 mm. If…EasySingle correct
3 Aug 2021, Shift 2 · Q27In Young's double slit experiment, 58 fringes are observed in the field of view when a light of wavelength 6000 $\mathrm{\AA}$ was used.…EasyNumerical value
25 Jul 2021, Shift 1 · Q8In the Young's double slit experiment, the distance between the slits varies in time as $d(t)=d_0+a_0\sin\omega t$ ; where $d_0$ , $\omega$ …MediumSingle correct
18 Mar 2021, Shift 1 · Q7In Young's double slit arrangement, slits are separated by a gap of 0.5 mm, and the screen is placed at a distance of 0.5 m from them. The…EasySingle correct
9 Jan 2020, Shift 2 · Q24In a Young's double slit experiment 15 fringes are observed on a small portion of the screen when light of wavelength 500 nm is used. Ten…EasyNumerical value