Q. The equation of a plane progressive waves is given by $y = 0.025\sin{(100t + 0.25x)}.$ The frequency of this wave would be
A) $\frac{50}{\pi}Hz$
B) $\frac{100}{\pi}Hz$
C) $100\ Hz$
D) $50\ Hz$
Explanation
(a) Compare the given equation with $y = a\sin{(\omega t + kx)}$
We get $\omega = 2\pi n = 100 \Rightarrow n = \frac{50}{\pi}Hz$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.