refraction of light

2. What is Refraction?
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The deviation in the path of light when it
passes from one medium to another
medium of different density is
called Refraction.

3. AIR
WATER

23. 1.Optically Rarer Medium
An optically rarer medium is that medi
in which the speed of light is more. For
example, water is an optically rarer medium
thanGLASS and air is an optically rarer
medium as compared to both water and gl
2.Optically Denser Medium An optically
denser medium is that medium in which th
speed of light is less. For example, water i
optically denser medium than air, and glas

36. RARER MEDIUM
DENSER MEDIUM
i
r
i>r