Q. The equation of a spherical progressive wave is
A) $y = a\ sin\omega t$
B) $y = a\ sin(\omega t - kr)$
C) $y = \frac{a}{\sqrt{r}}sin(\omega t - kr\ )$
D) $y = \frac{a}{r}sin(\omega t - kr)$
Explanation
(d) The amplitude of a plane progressive wave$=$a$,\ $that of a spherical progressive wave is$\ a/r\ $.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.