What is the velocity v of a wave having frequency f and wavelength lambda?
Answer and explanation
Correct answer: A. v = f * lambda
- Step 1: A wave travels a distance of one wavelength lambda in one time period T. Step 2. Speed v = lambda / T = f lambda since f = 1 / T. Answer: v = f lambda. Why not the others:* f / lambda inverts wavelength; lambda / f gives period times wavelength; f lambda^2 has incorrect dimensions.
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