Vision

What percentage of sensory receptors are located in the eyes?

• Around 50%

• Nearly 80%

• Approximately 60%

• About 70%

What does the frequency of a light wave determine?

• Its speed

• Its brightness

• Its hue

• Its amplitude

What is the function of the cornea in the human eye?

• To adjust the size of the pupil

• To protect the eye from dust

• To focus light onto the retina

• To let light into the eye

How do rods and cones differ in their function?

• Rods detect color, while cones detect light intensity

• Cones detect fine detail and color, while rods are more light-sensitive

• Rods adjust the size of the pupil, while cones focus light

• Rods and cones both detect fine detail and color

Why do we see an afterimage of different colors after staring at the flag?

• Due to the movement of the flag

• Because the brain creates false colors

• Due to the tiredness of cones responding to specific colors

• Because of the eye's adjustment to darkness