Q 11-14-005NEETJEE MainEasy
A wave is described by $y = 0.02\sin(4\pi t - 0.5\pi x)$ in SI units. Its speed is
Answer: (A) $8$ m/s
$\omega = 4\pi$ rad/s and $k = 0.5\pi$ rad/m: $v = \dfrac{\omega}{k} = \dfrac{4\pi}{0.5\pi} = 8$ m/s (along $+x$).
Solution by Sreeraj P, M.Sc Physics