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    Question

    What conditions must be met for stationary waves to

    form?
    A Two waves of equal wavelength and amplitude moving in opposite directions Correct Answer Incorrect Answer
    B Two waves of equal wavelength and phase moving together Correct Answer Incorrect Answer
    C Two waves of equal amplitude and speed moving together Correct Answer Incorrect Answer
    D Two waves of equal amplitude and frequency moving in opposite directions Correct Answer Incorrect Answer

    Solution

    Stationary waves, or standing waves, form when two waves of equal wavelength and amplitude travel in opposite directions along the same path. This interference results in a wave pattern that appears to be standing still.

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