Question

The amplitude, speed and frequency of a plane progressive wave are respectively 0.05 m,333 m/s, and 110 Hz. Write the equation of the wave.

• A. $y=0.05sin110(t-\frac{x}{333})$
• B. $y=0.05sin110\pi (t-\frac{x}{333})$
• C. $y=0.05sin220(t-\frac{x}{333})$
• D. $y=0.05sin220\pi (t-\frac{x}{333})$

Answer 1

The correct option is D $y=0.05sin220\pi (t-\frac{x}{333})$

Here, $A=0.05m,v=333m/s,f=110Hz$
So, $\omega =2\pi f=220\pi$
Equation of wave, $y=Asin\omega (t-\frac{x}{v})=0.05sin220\pi (t-\frac{x}{333})$