Light Quiz

What is the law of reflection?

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

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

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

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

Which of the following is an example of a light source?

• The Moon

• A mirror

• The Sun

• A shadow

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

• It speeds up.

• It slows down.

• It continues at the same speed.

• It stops.

Which part of the eye is responsible for focusing light onto the retina?

• Cornea

• Iris

• Lens

• Pupil

What is the range of wavelengths for visible light?

• 10 nm to 400 nm

• 400 nm to 700 nm

• 700 nm to 1 mm

• 1 mm to 10 cm

Which type of electromagnetic radiation has the shortest wavelength?

• Radio waves

• Infra-red radiation

• UV light

• X-rays

What is the primary function of the iris in the human eye?

• To focus light

• To control the amount of light entering the eye

• To detect colour

• To produce tears

What is the phenomenon called when light bends as it passes through different mediums?

• Reflection

• Refraction

• Diffraction

• Dispersion

Which part of the eye contains photoreceptor cells?

• Cornea

• Retina

• Lens

• Sclera

What type of lens is thicker in the middle than at the edges?

• Concave lens

• Convex lens

• Cylindrical lens

• Planar lens