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light travels through water at a speed of 2.25×10^8m/s.find the refractive index of water.(c=3×10^8) |
| Answer» REFRACTIVE index of a MATERIAL is a dimensionless number that describes how light propagates through a medium. Refractive index, n = c/v Where n is refractive index, c is the speed of light and v is phase velocity of light in the medium. The refractive index of WATER, n = 1.33 This IMPLIES 1.33 = 2.99 X 10 ^8/v Therefore, v = 2.25 x 10^8 metres per second I hope this information helps you. | |