Q. A plane progressive wave is given by y=2cos 6.284 (30t-x).what is period of the wave?
A) $\frac{1}{330}s$
B) 2$\pi \times 330s$
C) $(2\pi \times 330)^{- 2}s$
D) $\frac{6.284}{330}s$
Explanation
(a) Y=2cos 2π(330 t-x)
$\omega = 2\pi \times 330\ $
$T = \frac{1}{330}s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.