The distance between the successive crests of a wave travelling at 20ms\(^{-1}\) is 25cm. Calculate the frequency of the wave
A
0.8Hz
B
5.0Hz
C
50.0Hz
D
80.0hz
Verified Correct Answer: D.
Physical Principles & Numerical Solution
f = \(\frac{v}{\lambda} = \frac{20}{0.25} = 80Hz\)
Source: Myschool Past Questions Archive (Record #34671)