Answer:
a) 3.33 ns
b) Water distance = 0.75 m
Glass distance = 0.66 m
Diamond distance = 0.41 m
Explanation:
We take the speed of light, c = m/s.
Speed = distance/time
Time = distance/speed
a)
[tex]t=\dfrac{1}{3.0\times10^{8}}=3.33\times10^{-9}[/tex]
t = 3.33 ns
b)
Refractive index, n = speed of light in vacuum / speed of light in medium
[tex]n=\dfrac{c}{s}[/tex]
[tex]s=\dfrac{c}{n}[/tex]
[tex]d=s\times t[/tex]
[tex]d=\dfrac{c}{n}\times \dfrac{1}{c}[/tex]
[tex]d=\dfrac{1}{n}[/tex]
Thus, the distance traveled in the same time is numerically equal to the reciprocal of the refractive index.
For water n = 1.333
d = 1/1.333 = 0.75 m
For glass n = 1.517
d = 0.66 m
For diamond n = 2.417
d = 0.41 m
It take light 3.33 ns to travel 1.0 m in a vacuum.
The distance light travels in
This is defined as a space which lacks matter.
of light, c = m/s.
Speed = distance/time
Time = distance/speed
T = 1/3× 10⁸ = 3.33ns
Refractive index = speed of light in vacuum / speed of light in medium
n = c/s
s = c/n
d = st
= c/n ˣ 1/c = 1/n
Distance = 1/ refractive index
Water = 1/1.333 = 0.75m
Glass = 1/1.517 = 0.66m
Diamond = 1/2.417 = 0.41m.
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