A plane progressive wave is represented by the equation y = 0.2sin (200πt - 0.5.x) where x and y are measured in cm and t in s. What is the frequency of the wave?
Comparing y = 0.2sin (200πt - 0.5.x) with the general equation of wave y = Asin(ωt - kx)
ω = 200\(\pi\)
But ω = 2\(\pi\)f = 200\(\pi\)
f = \(\frac{200π}{2π}\) = 100Hz
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