Reflection and refraction

Front

What is the Law of Reflection?

Back

The Law of Reflection states that when a light ray strikes a reflective surface, the angle of incidence is equal to the angle of reflection.

Front

What happens to light when it strikes a mirror?

Back

Light bounces off the mirror at the same angle it hits.

Front

Why does a straw appear bent in a glass of water?

Back

The straw appears bent due to the refraction of light as it passes from water to air.

Front

What is a medium in terms of light travel?

Back

A medium is any material through which light can travel, such as air, water, or glass.

Front

How does light travel in glass or water compared to air?

Back

Light travels slower in glass or water compared to air.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another due to a change in its speed.

Front

What causes the bending of light rays?

Back

The bending of light rays is caused by the change in speed of light as it moves between different media.

Front

What is the angle of incidence?

Back

The angle of incidence is the angle between the incoming light ray and the normal (a line perpendicular to the surface) at the point of incidence.

Front

What is the angle of reflection?

Back

The angle of reflection is the angle between the reflected light ray and the normal at the point of reflection.

Front

What is total internal reflection?

Back

Total internal reflection occurs when light travels from a denser medium to a less dense medium at an angle greater than the critical angle, causing all the light to be reflected back into the denser medium.