Reflection and Virtual Images in Mirrors

The video tutorial explains the law of reflection, where the incident angle equals the reflected angle, and how this principle allows us to see images in mirrors. A diagram is used to show how light rays from a person's body reflect off a mirror, creating a virtual image. The tutorial details how rays diverge and appear to come from behind the mirror, forming a virtual image that is not physically present. This concept is applied to different parts of the body, illustrating how each point on the body has a corresponding virtual image point behind the mirror.

What does the law of reflection state?

• The incident angle equals the reflected angle.

• The incident angle is less than the reflected angle.

• The incident angle is unrelated to the reflected angle.

• The incident angle is greater than the reflected angle.

How do light rays from a person's foot create an image in a mirror?

• They converge at a point in front of the mirror.

• They diverge and appear to come from behind the mirror.

• They are absorbed by the mirror.

• They pass through the mirror.

What is the role of the normal line in reflection?

• It is parallel to the mirror surface.

• It is used to measure angles relative to the mirror.

• It is the path of the light ray.

• It is the point where light is absorbed.

What happens to the incident and reflected angles in a mirror?

• The incident angle is always larger.

• They are equal.

• The reflected angle is always larger.

• They are always different.

How can we determine where the rays appear to be coming from?

• By calculating the speed of light.

• By observing the color of the rays.

• By tracing the rays back in a straight line.

• By measuring the distance from the mirror.

What is a virtual image?

• An image that appears to be behind the mirror but is not physically there.

• An image that is formed by converging rays.

• An image that is physically present behind the mirror.

• An image that is projected onto a screen.

Where does the image of a person's nose appear in a mirror?

• In front of the mirror.

• At the surface of the mirror.

• Behind the mirror, at the same distance as the real nose.

• Above the mirror.

What is the significance of the virtual image in a mirror?

• It is a real image that can be captured on a screen.

• It is an illusion created by the mirror.

• It is an image that appears to be behind the mirror.

• It is an image that is formed by converging light rays.

What is behind the glass of a mirror?

• Nothing, it's empty space.

• A virtual image.

• The actual light source.

• A physical object like a wall or cabinet.

How do rays from different parts of the body form images in a mirror?

• They converge at a single point.

• They pass through the mirror.

• They diverge and appear to come from corresponding points behind the mirror.

• They are absorbed by the mirror.