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JEE Main 2 April 2025, Shift 1, Physics Q50

Question 50 of 75 in this shift, Physics question 25 of 25, Section B.

If the measured angular separation between the second minimum to the left of the central maximum and the third minimum to the right of the central maximum is

30^\circ

in a single slit diffraction pattern recorded using 628 nm light, then the width of the slit is ___________

\mu

Official answer

NTA final key.

Chapter: Wave Optics
Topic: Single Slit Diffraction
Idea tested: Single Slit Minima Condition

Same idea in other shifts

Asked 3× in all

4 Apr 2026, Shift 1 · Q33A slit of width $a$ is illuminated by light of wavelength $\lambda$ . The linear separation between $1^{\text{st}}$ and $3^{\text{rd}}$ …EasySingle correct
8 Apr 2024, Shift 1 · Q59A parallel beam of monochromatic light of wavelength 600 nm passes through single slit of 0.4 mm width. Angular divergence corresponding…EasyNumerical value

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 42 of the 174 JEE Main shifts held from 2017 to 2026.