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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 3 April 2025, Shift 2, Physics Q41

Question 41 of 75 in this shift, Physics question 16 of 25, Section A.

Two monochromatic light beams have intensities in the ratio 1:9. An interference pattern is obtained by these beams. The ratio of the intensities of maximum to minimum is
  1. (1)4:1Official answer
  2. (2)3:1
  3. (3)8:1
  4. (4)9:1

Official answer

Option 1

NTA final key.

Chapter
Wave Optics
Topic
Young's Double Slit
Idea tested
Intensity Ratio from Slit Widths

Same idea in other shifts

Asked 2× in all
  1. 3 Apr 2025, Shift 2 · Q43Width of one of the two slits in a Young's double slit interference experiment is half of the other slit. The ratio of the maximum to the…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 42 of the 174 JEE Main shifts held from 2017 to 2026.