Question

In a wave motion y = $\alpha sin(Kx-\omega t)$, the equation represents :

• A. electric field
• B. magnetic field
• C. displacement field
• D. pressure wave
  

Answer 1

The correct option is D pressure wave

Function of travelling wave.

$y=A\sin (kx-\omega t+\alpha )$

Wave number, $k=\frac{2\pi }{\lambda }$

Angular speed, $\omega =\frac{2\pi }{T}=2\pi v$

Pressure wave is also a function of travelling wave

Hence, It is a pressure wave