JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 1 February 2024, Shift 1, Physics Q45

Question 45 of 90 in this shift, Physics question 15 of 30, Section A.

A monochromatic light of wavelength 6000

\mathrm{\AA}

is incident on the single slit of width 0.01 mm. If the diffraction pattern is formed at the focus of the convex lens of focal length 20 cm, the linear width of the central maximum is :

(1)12 mm
(2)24 mmOfficial answer
(3)120 mm
(4)60 mm

Official answer

Option 2

NTA final key.

Chapter: Wave Optics
Topic: Single Slit Diffraction
Idea tested: Linear Width of Central Max

Same topic in other shifts

All Single Slit Diffraction questions

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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.