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3.3. Reflection of Light - Physics Chapter

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3.3. Reflection of Light - Physics Chapter

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Questions and Answers

What happens to light rays when they hit a piece of white paper?

The light rays are reflected in a specific direction.

The light rays are absorbed by the paper.

The light rays are refracted through the paper.

The light rays are scattered in all directions. (correct)

What is the name given to the light ray that moves towards a mirror?

Normal line

Incident ray (correct)

Reflected ray

Mirrored beam

What is the relationship between the angle of incidence and the angle of reflection?

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

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

They are always equal to each other. (correct)

They are always complementary angles.

What is the normal line in the context of reflection?

A line perpendicular to the mirror's surface at the point of reflection. (D) Signup and view all the answers

Why does the image in a flat mirror appear to be behind the mirror?

The brain interprets the reflected light rays as coming from behind the mirror. (D) Signup and view all the answers

What is the difference between how light reflects from a mirror and how light reflects from white paper?

Light is scattered by white paper, but reflected in a specific direction by a mirror. (A) Signup and view all the answers

In the diagram, what does the arrow pointing away from the mirror represent?

The reflected ray (C) Signup and view all the answers

Why is the image formed in a flat mirror said to be 'inverted'?

The image is flipped horizontally. (B) Signup and view all the answers

What is the purpose of the normal line in the experiment involving the box, mirror, and light rays?

To determine the angle of incidence and reflection. (D) Signup and view all the answers

Which of the following is NOT a way mirrors are used in everyday life?

Enlarging images in telescopes. (D) Signup and view all the answers

What is the angle of reflection if a ray of light strikes a mirror at an angle of 25°?

25° (D) Signup and view all the answers

In the experiment with the box, mirror, and light rays, what would happen if the mirror were tilted?

Both the angle of incidence and angle of reflection would change. (A) Signup and view all the answers

What is the main reason why a smooth surface reflects light according to the law of reflection?

The surface is smooth enough to allow for a consistent reflection. (A) Signup and view all the answers

Study Notes

Reflection of Light

When looking in a mirror, a clear reflection of oneself is seen. This image is called an image.
Mirrors reflect light. A piece of paper scatters light in all directions. A mirror reflects light in a similar direction.
The surface of a mirror is a polishing surface, so it reflects light without scattering. Rough surfaces like paper scatter light.
A mirror reflects all light in the same direction as the incoming light.
The reflection of light travels in a straight line.
The direction of a light ray can be determined by a straight line.
The light ray that hits the mirror is called the incident ray.
The light ray that bounces off the mirror is called the reflected ray.
The normal is a line at 90° to the mirror at the point where the ray hits.
The angle between the incident ray and the normal is the angle of incidence.
The angle between the reflected ray and the normal is the angle of reflection.
The law of reflection states that the angle of incidence equals the angle of reflection.
Using this law allows for the determination of an image from a flat mirror.

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Description

Explore the principles of light reflection in this quiz. Understand the concepts of incident rays, reflected rays, and the law of reflection. Test your knowledge on how mirrors and surfaces interact with light.