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Physics Chapter: Light and Optics

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Questions and Answers

What happens to a light ray as it moves from a medium with a higher refractive index to one with a lower refractive index?

The light ray is reflected at the boundary.

The light ray is bent away from the normal. (correct)

The light ray continues in a straight line.

The light ray is bent towards the normal.

According to Snell's Law, which of the following is true when light travels from one medium to another?

Light travels faster in a denser medium.

The product of the refractive index and the sine of the angle is constant. (correct)

The angle of refraction is unaffected by the refractive index.

The angle of incidence is always greater than the angle of refraction.

What does a higher refractive index signify about a medium?

It means light travels slower in that medium.

It indicates lower density.

It suggests the medium is more optically dense. (correct)

It signifies the medium absorbs light completely.

If the angle of incidence increases, what will happen to the angle of refraction in a lower refractive index medium?

The angle of refraction will increase. Signup and view all the answers

Which equation represents Snell's Law?

$n_1 imes heta_1 = n_2 imes heta_2$ Signup and view all the answers

What is the speed of light in a vacuum?

Approximately 300,000 kilometers per second Signup and view all the answers

What happens to the speed of light when it passes through a medium like glass or water?

It decreases Signup and view all the answers

Which term best describes rays of light that spread apart from a point?

Divergent rays Signup and view all the answers

Which type of light rays are defined as rays that run alongside each other without converging or diverging?

Parallel rays Signup and view all the answers

When light rays come together at a single point, they are called?

Convergent rays Signup and view all the answers

Study Notes

Light

Light is a form of electromagnetic radiation.
Electromagnetic radiation is visible to the human eye.

Optical Medium

Light rays can travel through transparent material.
A transparent material that lets light travel through it is called an optical medium.
An optical medium can be a gas, liquid, or solid.

Refractive Index

Every optical medium has a specific refractive index.
Snell’s Law describes the relationship between the angle of incidence and the angle of refraction: n1 sin θ1 = n2 sin θ2.
When a light ray travels from a medium with a higher refractive index (high density) into a medium with a lower refractive index (low density), the light ray is bent away from the normal.

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Description

Explore the properties of light, its behavior in different optical media, and the concept of refractive index. This quiz tests your understanding of how light travels and interacts with various materials, as well as the application of Snell's Law.