Question

Equation of a standing wave is expressed as $y=2,A\sin \omega t\cos kx$. In this equation, quantity $\omega /k$ represents.

• A. The speed of standing wave
• B. The speed of either of component wave
• C. The transverse speed of particle of the string
• D. None of these

Answer 1

Answer: (B)

Equation of component waves are
$y=A\sin (\omega t-kx)$ and $y=A\sin (\omega t+kx)$
So speed of component wave is $\left(\frac{\omega }{k}\right)$.