IGCSE Chapter 12 Light Introduction

How is light generally assumed to travel?

• In curved paths.

• In straight line paths called rays.

• As a wave that spreads out in all directions.

• Only through a vacuum.

What is the relationship between the angle of incidence and the angle of reflection when light strikes a reflective surface?

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

• The angle of incidence is always less than the angle of reflection.

• The angle of incidence is equal to the angle of reflection.

• There is no consistent relationship between the two angles.

What phenomenon occurs when light waves change direction at the interface between two different media?

• Reflection

• Diffraction

• Refraction

• Absorption

What happens to the angle of refraction when a light ray enters a medium with an increased index of refraction?

• It increases.

• It decreases.

• It remains the same.

• It becomes unpredictable.

What is a key characteristic of a real image?

• The light rays do not actually converge.

• It cannot be projected onto a screen.

• The eye constructs the image from diverging rays.

• The light rays from an object actually converge at some location.

What type of image is formed when light rays from an object actually converge at a specific location?

• A virtual image.

• A distorted image.

• A real image.

• A refracted image.