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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 2 April 2025, Shift 2, Physics Q34

Question 34 of 75 in this shift, Physics question 9 of 25, Section A.

A sinusoidal wave of wavelength 7.5 cm travels a distance of 1.2 cm along the xx-direction in 0.3 sec. The crest P is at x=0x = 0 at t=0t = 0 sec and maximum displacement of the wave is 2 cm. Which equation correctly represents this wave ?
  1. (1)y=2cos⁡(0.13x−0.5t)y = 2\cos(0.13x - 0.5t) cm
  2. (2)y=2cos⁡(3.35x−0.83t)y = 2\cos(3.35x - 0.83t) cm
  3. (3)y=2sin⁡(0.83x−3.5t)y = 2\sin(0.83x - 3.5t) cm
  4. (4)y=2cos⁡(0.83x−3.35t)y = 2\cos(0.83x - 3.35t) cmOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Waves
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.