JEE Main 2019 — Physics Waves & Oscillations
A travelling harmonic wave is represented by the equation y(x,t)=10−3sin(50t+2x), where x and y are in meter and t is in seconds. Which of the following is a correct statement about the wave?
Held on 12 Jan 2019 · Verified 6 Jul 2026.
The wave is propagating along the positive x -axis with speed 25ms−1
The wave is propagating along the positive x -axis with speed 100ms−1
The wave is propagating along the negative x -axis with speed 25ms−1
The wave is propagating along the negative x -axis with speed 100ms−1
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
The time period of a simple harmonic oscillator is $T=2 \pi \sqrt{\frac{k}{m}}$. Measured value of mass $(m)$ of the object is 10 g with an accuracy of 10 mg and time for 50 oscillations of the spring is found to be 60 s using a watch of 2 s resolution. Percentage error in determination of spring constant $(k)$ is $\_\_\_\_$ \%.
Two waves of same frequency and amplitude travel in opposite directions. The resulting pattern is:
A spring-mass system oscillates with angular frequency ω. If the mass is doubled and the spring constant is halved, the new angular frequency is:
In an open organ pipe $\nu_{3}$ and $\nu_{6}$ are $3^{\text {rd }}$ and $6^{\text {th }}$ harmonic frequencies, respectively. If $\nu_{6}-\nu_{3}=2200 \mathrm{~Hz}$ then length of the pipe is $\_\_\_\_$ mm . (Take velocity of sound in air is $330 \mathrm{~m} / \mathrm{s}$.)
A simple pendulum of string length 30 cm performs 20 oscillations in 10 s. The length of the string required for the pendulum to perform 40 oscillations in the same time duration is $\_\_\_\_$ cm. [Assume that the mass of the pendulum remains same.]
Work through every JEE Main Waves & Oscillations PYQ, year by year.