JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 4 April 2025, Shift 2, Physics Q34

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

Displacement of a wave is expressed as

x(t)=5\cos\left(628t+\frac{\pi}{2}\right)

m. The wavelength of the wave when its velocity is 300 m/s is : (

\pi=3.14

)

(1)0.5 m
(2)3 mOfficial answer
(3)5 m
(4)0.33 m

Official answer

Option 2

NTA final key.

Chapter: Waves
Topic: SHM Equations
Idea tested: General Solution of SHM

Same idea in other shifts

Asked 3× in all

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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.