Snell's Law and Refractive Index

Q.

What are the factors on which lateral displacement through glass slab depends?

1. Thickness of block

2. The angle of incidence

3. The refractive index of glass

4. The wavelength of light used

Q.

Why doesn't a ray of light passing through the optical centre of a lens deviate?

Q.

Why does a ray of light actually bend while going from one medium to another?

Q.

When a ray of light passes from a denser medium to a rarer medium,

1. it bends away from the normal.

2. it bends towards the normal.

3. it bends at 90⁰.

4. it goes undeviated.

Q.

On a glass plate a light wave is incident at an angle of ${60}^{\circ }$. If the reflected and the refracted waves are mutually perpendicular, the refractive index of material is

1. $\frac{\sqrt{3}}{2}$

2. $\sqrt{3}$

3. $\frac{3}{2}$

4. $\frac{1}{\sqrt{3}}$

Q. If a ray of light travels from air to water, then the constant $(=\frac{Sinr}{Sini})$ is the refractive index of _______ with respect to ______.

1. Water, water
2. Air, air
3. Water, air
4. Air, water

Q. when a light ray moves from rarer medium to denser medium , why it bends toward the norwal instead of going apart from normal .

Q. Find the angle of refraction for a ray of light travelling from glass to air. Given angle of incidence is ${30}^{\circ }$ and refractive index of glass is ${\mu }_g=\sqrt{2}$.

1. ${90}^{\circ }$
2. ${45}^{\circ }$
3. ${30}^{\circ }$
4. ${60}^{\circ }$

Q.

The critical angle for a light ray traveling from denser to rarer medium is defined as the angle of incidence at which the light refracts at 90°(angle of refraction).

If a ray of light travels from water (μ_w) to air (μ_a). Find the critical angle?

1. Sin^-1 (μ_w/ μ_a)

2. sin^-1 (μ_a/μ_w)

3. cos^-1 (μ_w/ μ_a)

4. 

Q.

Why light travels fastest in the world??

Q. The x-y plane is the boundary between two media . Medium-1 with z>0 has refractive index 2 and medium-2 with z<0 has refractive index 3 . A ray of light in medium -1 given by the vector A=63i + 83j-10k is incident on the plane of separation. Than find the unit vector along refracted ray ?

Q. Pick the incorrect statements regarding the refractive index from the following.

1. It is the measure of the extent of bending of a light ray in a medium with respect to another medium.
2. It is the measure of the speed of a light ray in a medium with respect to another medium.
3. A higher refractive index means higher speed of light in the medium.
4. A lower refractive index means an optically rarer medium.

Q.

A ray of light is incident on a medium at $\angle 60°$. The angle of refraction is different for different media for an angle of incidence = 60°.

In which medium the speed of light is slowest?

1. 1

2. 2

3. 3

4. same in all

Q. Pick the correct statements regarding the refractive index from the following.

1. It is the measure of the extent of bending of a light ray in a medium with respect to another medium.
2. It is the measure of the speed of a light ray in a medium with respect to another medium.
3. A higher refractive index means higher speed of light in the medium.
4. A lower refractive index means an optically rarer medium.

Q.

WHAT WILL HAPPEN IF A RAY OF LIGHT STRIKES 2 MEDIUM OF SURFACES

Q.

Snell’s law of refraction is given by;

1. Cos i = k Cos r

2. Sin i = k (Sin r) [k = constant]

3. None of these

4. Sin i = (Sin r)²

Q.

It is given that the value of $\frac{sini}{sinr}$ when light enters from medium P to medium Q is less than 1.

Which of the following statements is true?

1. P and Q have same optical density

2. P is optically denser than Q

3. Q is optically denser than P

4. Not possible

Q. A light ray is traveling from medium A to B. If the value of $\frac{\sin i}{\sin r}$ is1 implies that the light ray bends towards the normal.

1. greater than
2. lesser than
3. equal to

Q. Mike projects a laser into the pond. If the laser light is incident at an angle of 60°, and the reflected ray and refracted ray are mutually perpendicular, then what is the refractive index of the pond water?

1. √3/2
2. √3
3. 1/2
4. 2/√3

Q.

Pls explain how to solve this question

a ray of light is incident at 60degree on glass Air interface. Then light ray Will

(mu =√2, mu=1)

Q. A light ray is traveling from medium A to B. If the value of $\frac{\sin i}{\sin r}$ is1 implies that the light ray bends towards the normal.

1. greater than
2. lesser than
3. equal to

Q.

It is given that the value of (sin i / sin r) when light enters from medium P to medium Q is less than 1.

1. P is optically denser than Q

2. Q is optically denser than P

3. P and Q have same optical density

4. Not possible

Q.

According to Snell's law, the value of the constant(refractive index) depends on:

1. The pair of media

2. The angle of incidence

3. The pair and order of media (where order implies from where to where )

4. The angle of refraction

Q. A ray of light travelling in air obliquely into water.Does the light ray bend towards the normal or away from the normal?Why?

Q. briefly explain the path of light while passing from
(1) denser medium to rarer medium
(2) rarer medium to denser

Q.

A light ray is passing from medium $A$ to $B$ and $\frac{sini}{sinr}$ is greater than one. This implies:

1. If light goes from medium A to medium B, it will bend towards the normal.

2. If light goes from medium A to medium B, it will bend away from the normal.

3. If light goes from medium A to medium B its speed reduces.

4. If light goes from medium B to medium A its speed increases.

Q. Which of the following statements is/are correct regarding refractive index?

1. It is the measure of the degree of bending of a light ray on change of medium.
2. It gives a measure of the speed of a light ray in a medium.
3. A higher refractive index means a higher speed of light in that medium.
4. An optically rarer medium has lower refractive index.

Q. A narrow beam of light that is moving in a defined direction is:

1. Wave
2. Ray
3. Rarefaction
4. Compression

Q. The velocity of light in glass whose refractive index with respect to air is $1.5$, is $2\times {10}^8{\text{m s}}^{-1}$, and in a certain liquid, the velocity of light is found to be $2.5\times {10}^8{\text{m s}}^{-1}$. Find the refractive index of the liquid with respect to air. [2 marks]