Question

400 m/s is the velocity of a wave. If its wavelength is 80 cm, what is its frequency?

• A. 5Hz
• B. 50Hz
• C. 500Hz
• D. 5000Hz

Answer 1

Answer:

C. 500Hz

To find the frequency, we can use the wave equation:

Frequency (f) = Velocity (v) / Wavelength (λ)

Given:

• Velocity (v) = 400 m/s

• Wavelength (λ) = 80 cm = 0.8 m

Now, plug in the values:

f = v / λ
= 400 m/s / 0.8 m
= 500 Hz

So, the frequency is indeed 500 Hz.