A progressive wave is travelling along the positive direction of the x-axis. For this wave, amplitude = 5 cm, period = 0.2 s and wavelength = 30 cm
The equation of the wave using SI units is given by

Options

A. `y = 0.05 sin 2pi ((t)/(0.2) - (x)/(0.3))`
B. `y = 0.5 sin 2pi ((t)/(0.2) - (x)/(30))`
C. `y = 5 sin 2pi ((t)/(0.2) + (x)/(3))`
D. `y = 0.05 sin 2pi ((x)/(0.3) + (t)/(0.2))`

Answer

A

Explanation

`y = A sin 2pi ((t)/(T) - (x)/(lamda))`
`A = 0.05 m, t = 0.2 s and lamda = 0.3m`
`:. y = 0.05 sin 2pi ((t)/(0.2) - (x)/(0.3))`