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    Question

    When a light wave is reflected from a mirror, there is

    a change in its –
    A frequency Correct Answer Incorrect Answer
    B amplitude Correct Answer Incorrect Answer
    C wavelength Correct Answer Incorrect Answer
    D velocity Correct Answer Incorrect Answer

    Solution

    When a light wave is reflected from an object, it changes not only its amplitude but also its phase according to the properties of the object at a particular point. The velocity and momentum are just reversed in another direction.

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