Q. Of the following, the equation of plane progressive wave is
A) $y = r\sin{\omega t}$
B) $y = r\sin{(\omega t - kx)}$
C) y =$\frac{a}{\sqrt{r\ }}$sin ($\omega t - kx$)
D) y = $\frac{a}{r}\sin(\omega t - kx)$
Explanation
(b) The position $f\ $such a wave changes in two dimensional plane with time. Therefore, (b) represents the correct equation.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.