1. If the speed of light in a medium is 0.75 x 10 m/s? What is the absolute retractive
index of the medium ? (Velocity of light in vacuum is 3 x 108m/s)
Answers
Answered by
1
Answer:
ANSWER
The refraction index, n, of a transparent medium is defined as the ratio of speed of light in vacuum to the speed of light in that medium. The formula is n=
v
c
.
where the speed of light c=3×10
8
m/s and v is the speed of light in the desired medium which is given as v=2.4×10
8
m/s.
Therefore, n=
2.4×10
8
m/s
3×10
8
m/s
=1.25.
Hence, the refractive index of the transparent medium is 1.25.
Answered by
0
Explanation:
Given: v=3×10
8
ms
−1
,d=10 cm and μ=1.5
t=
c/μ
d
t=
2×10
8
10×10
−2
..........(∵
μ
c
=
1.5
3×10
8
=2×10
8
)
t=0.5×10
−9
s=0.5 nanosecond
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