the absolute refractive index of water is 4/3 what is meant by this statement
Answers
The refractive index of glass and water is same
Explanation:
because the speed of light and glass and water is 2×108 m/s and by the formula the answer comes 4/3
it means, speed of light in water is 3/4 times of speed of light in vaccum i.e., 2.25 × 10^8 m/s
we know, if light passing through rare medium to denser medium it bends towards the normal because there are higher obstacles present in denser than rare medium.
in simple way, denser medium has a specific property by which it tries to stop light to travel within it. this property is not other than refractive index of that medium.
refractive index is the ratio of speed of light travelled in vaccum to speed of that of medium.
now here absolute refractive index of water is 4/3. it means, speed of light in water = speed of light in vaccum/(4/3)
= 3/4 × speed of light in vaccum
= 3/4 × 3 × 10^8 m/s
= 9/4 × 10^8 m/s
= 2.25 × 10^8 m/s
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