If the speed of a standing wave in a string is 2 m/s and its wavelength is 0.25 m, then the frequency of the standing wave will be:
Correct answer: D. 8.0 Hz.
- A. 0.125 Hz.
- B. 2.0 Hz.
- C. 4.0 Hz.
- D. 8.0 Hz.
Explanation
Frequency equals speed divided by wavelength, so 2 divided by 0.25 gives 8.0 Hz. Multiplying them gives 0.5 and dividing the other way gives 0.125 Hz, which appears as a distractor.
This question appeared on the UHS MDCAT 2026 paper, which you can sit online with every answer explained.
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About Stationary Waves
Stationary waves form when two waves of the same frequency and amplitude travel in opposite directions and interfere. The topic covers nodes, antinodes, wavelength, phase, resonance, and the allowed frequencies on strings and in air columns. Unlike progressive waves, stationary waves do not transfer energy from one point to another.
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