Relative Refractive Index

Q.

Absolute refractive index of glass is $1.5$ and refractive index of glass with respect to water is $1.125$. The absolute refractive index of water is ______

1. $1.5$

2. $1.33$

3. $1.7$

4. $1.9$

Q.

How is refractive index of a medium 2 given with respect to medium 1 related to speed of light?
where, $n_1$ and $n_2$ are the respective refractive indicies of medium 1 and medium 2. And, $c_1$ and $c_2$ are speed of light in medium 1 and medium 2 respectively.

1. 

2. 

3. n₁ – n₂ = v₂ – v₁

4. None of these

Q.

The refractive indices of glass and water w.r.t air are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The refractive index of glass with respect to water will be

1. $\frac{8}{9}$

2. $\frac{9}{8}$

3. $\frac{7}{6}$

4. None of these

Q.

A ray of light is incident on a glass-water interface at an angle i, it merges finally parallel to the surface of the water as shown in the figure, the value of ${\mu }_g$ would be:

1. (4/3) sin i

2. 1 /sin i

3. 4/3

4. 1