Physics
Name two factors on which the refractive index of a medium depends? State how does it depends on the factors stated by you.
Refraction Plane Surfaces
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Answer
The factors on which the refractive index of a medium depends are as follows —
(i) Nature of the medium (on the basis of speed of light) — Less the speed of light in the medium as compared to that in air, more is the refractive index of the medium.
We know that,
Vglass = 2 x 10 8 ms-1, μglass = 1.5
Vwater = 2.25 x 10 8 ms-1, μwater = 1.33
(ii) Physical condition such as temperature — With an increase in temperature, the speed of light in medium increases, so the refractive index of the medium decreases.
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