Q. The equation of sound wave is $y = 0.0015\sin{(62.4x + 316t)}$ The wavelength of this wave is
A) 0.2 unit
B) 0.1 unit
C) 0.3 unit
D) Cannot be calculated
Explanation
(b) Compare with $y = a\sin{(\omega t - kx)}$
We have $k = \frac{2\pi}{\lambda} = 62.4 \Rightarrow \lambda = \frac{2\pi}{62.4} = 0.1$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.