Question

    In which year was the Doppler effect discovered by

    Austrian scientist Christian Doppler, that describes the change in frequency of any kind of sound or light wave produced by a moving source with respect to an observer?
    A 1846 Correct Answer Incorrect Answer
    B 1844 Correct Answer Incorrect Answer
    C 1842 Correct Answer Incorrect Answer
    D 1840 Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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