Question

A sinusoidal wave is represented by the equation $y=Asin(5\pi t-3x)$. The wavelength of the wave is

• A. $\lambda =2\pi /3$
• B. $\lambda =4\pi /3$
• C. $\lambda =\pi /4$
• D. $\lambda =\pi /2$

Answer 1

The correct option is A $\lambda =2\pi /3$

Comparing the equation $y=Asin(5\pi t-3x)$ with the standard equation $y=Asin(2\pi t/T-kx)$, we see that $k=3$ or $\lambda =2\pi /3$
The correct option is (a)