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    Question

    "Tice splitting of different colours of light in a prism

    is :
    A Reflection of light Correct Answer Incorrect Answer
    B Dispersion light Correct Answer Incorrect Answer
    C Diffraction light Correct Answer Incorrect Answer
    D Refraction of light Correct Answer Incorrect Answer

    Solution

    The refractive index of many materials (such as glass) varies with the wavelength or colour of the light used, a phenomenon known as dispersion. This causes light of different colours to be refracted differently and to leave the prism at different angles, creating an effect similar to a rainbow. In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency, or alternatively when the group velocity depends on the frequency.

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