Understanding Refraction

The video tutorial explains the concept of refraction, focusing on how light behaves when it passes through different mediums. It uses an analogy of a car entering a muddy road to illustrate how light changes direction when moving from a less dense to a more dense medium, and vice versa. The tutorial also covers the angles of incidence and refraction, highlighting how these angles differ when light transitions between air and glass.

What happens to light when it travels from a less dense to a more dense medium?

• It speeds up and continues in a straight line.

• It slows down and changes direction.

• It speeds up and changes direction.

• It slows down and continues in a straight line.

In the car analogy, what causes the car to turn when entering the mud?

• The car's wheels on one side slow down first.

• The car's wheels on one side speed up first.

• The car speeds up as it enters the mud.

• The car's wheels on both sides slow down equally.

When light enters a glass block from air, how does it bend?

• It bends randomly.

• It does not bend at all.

• It bends towards the normal.

• It bends away from the normal.

What happens to light when it exits a denser medium into a less dense one?

• It stops moving.

• It bends away from the normal.

• It bends towards the normal.

• It continues in a straight line.

What is the angle of incidence?

• The angle between the light ray and the normal when it enters a medium.

• The angle between the light ray and the surface of a medium.

• The angle between the light ray and the normal when it exits a medium.

• The angle between the light ray and the surface when it exits a medium.

How does the angle of incidence compare to the angle of refraction when light moves from air to glass?

• The angle of refraction is larger.

• The angle of incidence is smaller.

• The angle of incidence is larger.

• Both angles are equal.

When light moves from glass to air, how does the angle of incidence compare to the angle of refraction?

• The angle of incidence is smaller.

• The angle of refraction is smaller.

• The angle of incidence is larger.

• Both angles are equal.

What is the angle of refraction?

• The angle between the light ray and the normal when it enters a medium.

• The angle between the light ray and the surface of a medium.

• The angle between the light ray and the normal when it exits a medium.

• The angle between the light ray and the surface when it exits a medium.