Why is refractive index in a transparent medium greater than one?
a)
Because the speed of light in vacuum is medium
b)
Because the speed of light in vacuum is always greater than speed in a transparent medium
c)
Frequency of wave changes when it crosses medium
d)
None of the above
Why is refractive index in a transparent medium greater than one?
a)
Because the speed of light in vacuum is medium
b)
Because the speed of light in vacuum is always greater than speed in a transparent medium
c)
Frequency of wave changes when it crosses medium
d)
None of the above
Question ID - 152959 | SaraNextGen Top Answer
Why is refractive index in a transparent medium greater than one?
a)
Because the speed of light in vacuum is medium
b)
Because the speed of light in vacuum is always greater than speed in a transparent medium
c)
Frequency of wave changes when it crosses medium
d)
None of the above
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Why is refractive index in a transparent medium greater than one? |
|
|
a) |
Because the speed of light in vacuum is medium |
|
b) |
Because the speed of light in vacuum is always greater than speed in a transparent medium |
|
c) |
Frequency of wave changes when it crosses medium |
|
d) |
None of the above |
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(b) Absolute refractive index is defined as the ratio of speed of light in free space to that in a given medium
For a given light, denser is the medium, lesser will be the speed of light and so greater will be the refractive index, |
as
. As speed of light in vacuum is always greater than speed in a transparent medium, so the refractive index in a transparent medium is greater than one.