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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumConceptual

JEE Main 4 April 2024, Shift 1, Physics Q31

Question 31 of 90 in this shift, Physics question 1 of 30, Section A.

The equation of stationary wave is : y=2asin⁡(2πntλ)cos⁡(2πxλ)y = 2a\sin\left(\frac{2\pi nt}{\lambda}\right)\cos\left(\frac{2\pi x}{\lambda}\right). Which of the following is NOT correct :
  1. (1)The dimensions of nt is [L]
  2. (2)The dimensions of xx is [L]
  3. (3)The dimensions of n is [LT−1][LT^{-1}]
  4. (4)The dimensions of n/λ\lambda is [T]Official answer

Official answer

Option 4

NTA final key.

Chapter
Units and Measurements
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 108 of the 174 JEE Main shifts held from 2017 to 2026.