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Physics
Physics
Problem
Which of the following expressions correctly relates the refractive index
n
n
n
of a medium to the speed of light
v
v
v
in that medium and the speed of light in vacuum
c
c
c
? a)
n
=
c
v
n=\sqrt{\dfrac{c}{v}}
n
=
v
c
b)
n
=
v
c
n=\dfrac{v}{c}
n
=
c
v
c)
n
=
c
v
n=\dfrac{c}{v}
n
=
v
c
d)
n
=
(
c
v
)
2
n=\left(\dfrac{c}{v}\right)^2
n
=
(
v
c
)
2
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