Reflection and Refraction - GCSE Physics

In which direction does light bend when passing from a more dense medium to a less dense medium?

• Away from normal.

• Towards normal.

• No bending occurs.

• Randomly.

What happens to the speed of light when it passes from a medium of lower refractive index to one of higher refractive index?

• Nothing happens

• Speeds up.

• Slows down.

• Remains the same.

What happens to the speed of light when it passes from a medium of higher refractive index to one of lower refractive index?

• Becomes faster.

• Slows down.

• Remains the same.

• Speeds up.

What does the refractive index of a medium measure?

• The angle of incidence of light.

• The speed of light in a vacuum.

• How much the speed of light is reduced when it passes through the medium.

• The color of light.

How is the refractive index of a medium related to the speed of light in the medium?

• No relationship.

• Inversely proportional.

• Directly proportional.

• Randomly related.

How does the speed of light in a medium relate to its refractive index?

• The higher the refractive index, the faster the speed of light in the medium.

• The lower the refractive index, the slower the speed of light in the medium.

• The higher the refractive index, the slower the speed of light in the medium.

• There is no relationship between refractive index and speed of light.

What is the critical angle?

• The angle of incidence at which the angle of refraction is 90 degrees.

• The angle of incidence at which the angle of refraction is 0 degrees.

• The angle of incidence at which the angle of reflection is 90 degrees.

• The angle of incidence at which the angle of reflection is 0 degrees.

In which direction does light bend when passing from a less dense medium to a more dense medium?

• Towards normal.

• No bending occurs.

• Away from normal.

• Randomly.

What happens when the angle of incidence is greater than the critical angle?

• Reflection occurs.

• Total internal reflection occurs.

• Refraction occurs.

• Absorption occurs.

When does total internal reflection occur?

• When light passes through a vacuum.

• When light is unable to pass from a medium of higher refractive index to a medium of lower refractive index, and is reflected back inside the higher refractive index medium.

• When light passes from a less dense medium to a more dense medium.

• When light passes from a medium of lower refractive index to a medium of higher refractive index.