What is the standard relationship between a wave's speed, frequency, and wavelength?

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Multiple Choice

What is the standard relationship between a wave's speed, frequency, and wavelength?

Explanation:
A wave’s speed comes from how quickly the waveform repeats and how far apart successive peaks are. In one second, f peaks pass a point, and each peak is separated by λ, so the distance the wave travels in one second is f × λ. That’s the speed: v = f × λ. This makes sense in units: hertz times meters gives meters per second. The other possibilities would mis-match units or describe something else, while knowing two quantities lets you find the third.

A wave’s speed comes from how quickly the waveform repeats and how far apart successive peaks are. In one second, f peaks pass a point, and each peak is separated by λ, so the distance the wave travels in one second is f × λ. That’s the speed: v = f × λ. This makes sense in units: hertz times meters gives meters per second. The other possibilities would mis-match units or describe something else, while knowing two quantities lets you find the third.

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