If the absolute refractive indicec of water and glass are 4/3 and 3/2 respectively, then what will be the ratio of velocity of light in water to that of glass ?
Page 45 Chapter - 2.Reflection and Refraction
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Answer:9/8
Explanation: Refractive index can be defined as the ratio of the speed of light in vacuum and the speed of light in that particular medium.
RI(glass) = 3/2
C/v(glass) = 3/2 --- (1)
RI(water) = 4/3
C/v(water) = 4/3 --- (2)
Dividing (1) by (2)
v(water) / v(glass) = 9/8
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