JEE Main 2026 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 2 April 2026, Shift 1, Physics Q35

Question 35 of 75 in this shift, Physics question 10 of 25, Section A.

The equation of a plane progressive wave is given by

y=5\cos\pi\left(200\,t-\frac{x}{150}\right)

where

x

and

y

are in cm and

t

is in second. The velocity of the wave is ________ m/s.

(1) $120$
(2) $150$
(3) $200$
(4) $300$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Waves
Topic: Waves on Strings
Idea tested: Particle Velocity vs Wave Velocity

Same idea in other shifts

Asked 3× in all

7 Apr 2025, Shift 2 · Q35The equation of a wave travelling on a string is $y=\sin[20\pi x+10\pi t]$ , where $x$ and t are distance and time in SI units. The minimum…MediumSingle correct
29 Jun 2022, Shift 1 · Q46A longitudinal wave is represented by $x = 10\sin 2\pi\left(nt - \frac{x}{\lambda}\right)$ cm. The maximum particle velocity will be four…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.