Question

EL
1. The
mls
speed of light in
substance
x is 1:25x108
4 that
in air is 3x108 m/s. find the
refractive index
this substance.​

Answer 1

Answer:

2.4

Explanation:

According to Snell's Law:

n

1

n

2

=

v

2

v

1

and R.I for air is 1

Substituting,

1

n

2

=

1.25×10

8

3×10

8

Therefore, n

2

=2.4