The distance between two successive crests of a wave is 15cm and the velocity 300m/s¹. Calculate the frequency.

A. 2.0×10²Hz
B. 4.5×10³Hz
C. 2.0×10³Hz
D. 4.5×10²Hz

Correct Answer:

Option C – 2.0×10³Hz

Explanation

Wavelength = 15cm = 0.15m

Velocity = 300m/s

V = fx

F = V/Wavelength

F = 300/0.15 Hertz

F = 2 x 10³Hz