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Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 28 June 2022, Shift 2, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

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 refractive index 7/5, is 1α\frac{1}{\alpha}. The value of α\alpha is __________.

Official answer

4

NTA final key.

Chapter
Wave Optics
Topic
Young's Double Slit
Idea tested
Angular Fringe Width

Same idea in other shifts

Asked 2× in all
  1. 3 Sep 2020, Shift 1 · Q17In a Young's double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.