Light and Color Quiz

What is the primary function of the retina in the eye?

• To focus light
• To detect light
• To reflect light
• To absorb light

Which of the following best describes the law of reflection?

• The angle of incidence equals the angle of refraction
• The angle of incidence equals the angle of reflection
• The angle of incidence is always greater than the angle of reflection
• The angle of incidence is always less than the angle of reflection

What happens to light when it passes from air into glass?

• It speeds up and bends away from the normal
• It slows down and bends towards the normal
• It reflects off the surface
• It disappears

Which colors are considered primary colors of light?

• Red, yellow, blue
• Red, green, blue
• Cyan, magenta, yellow
• Green, orange, purple

What is specular reflection?

• Reflection off a rough surface
• Reflection off a smooth surface
• Absorption of light
• Refraction of light

Why do objects appear to be a certain color?

• They emit that color of light
• They absorb all other colors and reflect that color
• They reflect all colors equally
• They change color based on the light source

What is the speed of light in a vacuum?

• Approximately 150,000,000 m/s
• Approximately 300,000,000 m/s
• Approximately 450,000,000 m/s
• Approximately 600,000,000 m/s

What is the effect called when light changes direction as it passes from one medium to another?

• Reflection
• Refraction
• Diffraction
• Dispersion

What is diffuse scattering?

• Reflection that forms a clear image
• Reflection that does not form a clear image
• Absorption of light
• Transmission of light

What role do photoreceptors play in the eye?

• They focus light
• They detect light and send signals to the brain
• They protect the eye
• They control the pupil size