Question

Speed of light in air is 3 into 10 ki power 8 metre per second and the speed of light in air is 2.55 into 10 ki power 8 find the refractive index of water respect to air

Answer 1

Answer:

According to Snell's Law:

sin r

sin i

=

n

1

n

2

=

v

2

v

1

and Refractive Index for air is ≈1

Substituting,

1

1.5

=

v

2

3×10

8

Therefore, v

2

=

1.5

3×10

8

=2×10

8

m/s

Answer 2

Answer:

1.18 (approx.)

Explanation:

According to Snell's Law, it is derived that,

Refractive index of the 2nd medium with respect to the 1st medium

=(Speed of light in 1st medium) /(Speed of light in 2nd medium)

The solution is in accordance with this principle.