Answer:

Refractive index of a medium, nm = Speed of light in vacuumSpeed of light in the medium

Speed of light in vacuum, c=3×108ms−1

Refractive index of glass, ng=1.50

Speed of light in the glass, v = Speed of light in vacuumRefractive index of glass

v=cng

v=3×1081.50=2×108ms−1

Therefore, speed of light in the glass, v=2×108ms−1

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Explanation:

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