Question

) Refractive index of water is 1.33 and crown glass is 1.52 then the velocity of light is
a) more in water
b) more in glass
c) equal in both
d) all of above​

Answer 1

Answer

• The velocity of light would be more in water as it has lesser refractive index
• Therefore the Answer to your question is Option A

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• When a light travels from one medium to another, then the light ray bends.
• This phenomenon of the light bending is called as refraction of light.
• This happens because of the optical density of the medium, when a light ray travels from a optically rarer medium to an optically denser medium then the ray of light bends towards from the normal.
• Similarly when a ray of light enters from an optically denser medium to an optically rarer medium, then it bends away from the normal.
• So as the refractive index increase of a medium is high then the light ray would travel slower and vice versa.

Answer 2

Required Answer :-

Option A

Know More :-

Refractive Index - It is defined as the ratio of speed of light and the speed of object.

The formula is :-

$\sf n=\dfrac{c}v$

Where

n = Refractive Index

C = Speed of light in vaccum

v = Speed of the object