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    Question

    The Planck constant is used

    to:
    A Calculate photon energy Correct Answer Incorrect Answer
    B Determine gravitational force Correct Answer Incorrect Answer
    C Find charge on an electron Correct Answer Incorrect Answer
    D Measure electric resistance Correct Answer Incorrect Answer

    Solution

    Planck’s constant is a fundamental constant in quantum mechanics, used to relate photon energy to its frequency.

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