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what is dispersive power?

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what is dispersive power?

    • Posted by Sumair Qazi 8 years ago

    CBSE > Class 12 > Physics
    • 1 answers

    Amar Kumar 8 years ago

    Dispersive power : Power of a transparent medium to separate different colors of light by refraction as measured by the difference in refractivity for two specified widely differing wavelengths divided by the refractivity at some specified intermediate wavelength

    Dispersive power is basically a measure of the amount of difference in the refraction of the highest and lowest wavelengths that enter the prism. This is expressed in the angle between the 2 extreme wavelengths. The greater the dispersive power, the greater the angle between them, and vice-versa.

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