Q. The wave equation is $y = 030\sin{(314t - 1.57x)}$ where $t,\ x$ and $y$ are in second, meter and centimeter respectively. The speed of the wave is
A) $100\ m/s$
B) $200\ m/s$
C) $300\ m/s$
D) $400\ m/s$
Explanation
(b) $\omega = 314,\ k = 1.57$ and $v = \frac{\omega}{k} = \frac{314}{1.57} = 200\ m/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.