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The ray is refracted more if the refractive index difference, n1 - n2, is larger. Now air has refractive index that is 1, but
The ray is refracted more if the refractive index difference, n1 - n2, is larger. Now air has refractive index that is 1, but
Imagine a ray of light entering a grain of sand from air (dry sand) and from water (wet sand) . In both
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