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if the ratio of velocity of light in air to the velocity in another medium is 0.25.what is the refractive index?
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if the ratio of velocity of light in air to the velocity in another medium is 0.25.what is the refra...
Mathematics, 27.01.2021 02:10
Mathematics, 27.01.2021 02:10
Mathematics, 27.01.2021 02:10