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Light travels through water with a speed...

Light travels through water with a speed of `2.25 xx 10^(8)m//s`. What is the refractive index of water ? Given speed of light in vacuum `= 3xx10^(8)m//s`.

A

1.41

B

1.47

C

1.33

D

1.5

Text Solution

Verified by Experts

The correct Answer is:
C
Here, speed of light in water, `v = 2.25 xx 10^(8)m//s`
speed of light in vacuum, `c = 3 xx 10^(8)m//s`, refractive index, `n = ?`
From `n = c/v`,
`n = (3xx10^(8))/(2.25xx10^(8)) = 1.33`
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Knowledge Check

  • The velocity of light in glass medium is 2 xx 10^(8)m//s . The refractive index of glass if speed of light in air is 3 xx 10^(8)m//s is

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