The progressive wave equation is $y = A\sin(\omega t - kx)$, where $A$ is amplitude, $\omega = 2\pi f$ is angular frequency, and $k = \frac{2\pi}{\lambda}$ is the wave number. The wave speed is $v = \frac{\omega}{k}$.
Back to JEE Main 2025 Waves & Oscillations
JEE Main 2025 — Physics Waves & Oscillations
medium
mcq
2025
Official previous-year question
Verified 30 May 2026.
Question
The general equation of a progressive (travelling) wave moving in the positive $x$-direction is:
Options
- A
$y = A\sin(\omega t - kx)$
- B
$y = A\cos(\omega t)$
- C
$y = A\sin(kx)$
- D
$y = A(\omega t - kx)$
Solution
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