Speed of light in a vacuum = 3.0 × 10^8 m/s Refractive index of air = 1.0 Light travels at a speed of 2.0 × 10^8 m/s in glass. Use this information to calculate the refractive index of glass.
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i have not studied that i am in 9th
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we know that n2/ n1 = V1 / V2
therefore, n = 3/2
n= 1.5 for glass
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