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Question
Absolute refractive indices of glass and water are `3/2 and 4/3` respectively. If the speed of light in glass is 2 × 108 m/s, the speed of light in water is ______.
Options
`9/4xx10^8` m/s
`5/2xx10^8` m/s
`7/3xx10^8` m/s
`16/9xx10^8` m/s
Solution
Absolute refractive indices of glass and water are `3/2 and 4/3` respectively. If the speed of light in glass is 2 × 108 m/s, the speed of light in water is `bbunderline(9/4xx10^8 "m/s")`
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