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Science TNSB Mentoring
Class 9
Light
Convex Mirrors, Refraction, and Optical Applications
6.
Refractive index
Question:
2
m.
The speed of light in air is
3
×
10
8
m
/
s
and in glass it is
2
×
10
8
m
/
s
. What is the refractive index of glass?
Answer:
The formula to find refractive index is
Speed
of
light
in
the
medium
Speed
of
the
light
in
vacuum
Speed
of
light
in
the
vacuum
Speed
of
the
light
in
medium
By applying the known values,
Refractive index \(=\)
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