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    Question

    What is the wavelength range of the visible spectrum?

    A 2600 Å – 3000 Å Correct Answer Incorrect Answer
    B 3900 Å – 7600 Å Correct Answer Incorrect Answer
    C 8500 Å – 9800 Å Correct Answer Incorrect Answer
    D 7800 Å – 8000 Å Correct Answer Incorrect Answer

    Solution

    The visible spectrum encompasses wavelengths from about 3900 Å to 7600 Å. This range includes all the colors perceivable by the human eye, from violet at the shorter wavelengths to red at the longer wavelengths.

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