JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 10 April 2023, Shift 2, Physics Q47

Question 47 of 90 in this shift, Physics question 17 of 30, Section A.

The ratio of intensities at two points P and Q on the screen in a Young's double slit experiment where phase difference between two waves of same amplitude are

\pi/3

and

\pi/2

, respectively are

(1) $3:2$ Official answer
(2) $2:3$
(3) $1:3$
(4) $3:1$

Official answer

Option 1

NTA final key.

Chapter: Wave Optics
Topic: Young's Double Slit
Idea tested: Resultant Intensity Formula

Same idea in other shifts

Asked 13× in all

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1 Feb 2024, Shift 2 · Q59In Young's double slit experiment, monochromatic light of wavelength 5000 Å is used. The slits are 1.0 mm apart and screen is placed at…MediumNumerical value
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27 Jul 2022, Shift 1 · Q53Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the two…EasyNumerical value
27 Jul 2022, Shift 2 · Q46Two coherent sources of light interfere. The intensity ratio of two sources is 1 : 4. For this interference pattern if the value of…MediumSingle 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.