Question 1

Which property of a light wave determines the hue (color) that we perceive?

Accepted Answer

Wavelength

Question 2

The visible light spectrum ranges from approximately what wavelengths?

Accepted Answer

$$380 to$$ $$700 nm$$

Question 3

Which of the following pairs correctly matches the wave property with the perceived property?

Accepted Answer

Amplitude: brightness

Question 4

What is the correct order of structures that light passes through as it enters the eye?

Accepted Answer

Cornea → Lens → Retina

Question 5

As people age, they often need reading glasses due to a loss of accommodation. Which structure is primarily responsible for this change?

Accepted Answer

Lens

Question 6

Which type of photosensitive cell is most responsible for seeing in low light conditions?

Accepted Answer

Rods

Question 7

Why do humans have a blind spot in their vision?

Accepted Answer

It is where the optic nerve leaves the eye to go to the brain

Question 8

Which region of the retina contains the highest concentration of cones and is responsible for sharp central vision?

Accepted Answer

Fovea

Question 9

According to the trichromatic theory, how many types of cones are there and what do they respond to?

Accepted Answer

Three types; different wavelengths

Question 10

Which phenomenon is explained by the opponent process theory but not by the trichromatic theory?

Accepted Answer

Afterimages

Question 11

A person with deuteranopia is missing which type of cone?

Accepted Answer

Green

Question 12

Which of the following best describes the function of the cornea?

Accepted Answer

It is a protective layer that bends light as it enters the eye

Question 13

Which property of light is most closely associated with the perception of saturation?

Accepted Answer

Complexity

Question 14

If a person is unable to distinguish between red and green, which theory best explains this type of colorblindness?

Accepted Answer

Trichromatic theory

Question 15

Which structure of the eye is responsible for controlling the amount of light that enters?

Accepted Answer

Iris

Question 16

Which of the following is NOT a pair of opponent colors according to the opponent process theory?

Accepted Answer

Green/Yellow

Question 17

Which scenario best illustrates the function of rods in the retina?

Accepted Answer

Walking through a dimly lit room at night

Question 18

Which of the following best describes the process of accommodation in the eye?

Accepted Answer

The lens changes shape to focus on objects at different distances

Question 19

Which part of the eye contains the photosensitive cells responsible for vision?

Accepted Answer

Retina

Question 20

A person stares at a blue image for a long time and then looks at a white wall, seeing a yellow afterimage. Which theory explains this phenomenon?

Accepted Answer

Opponent process theory

Sensation and Perception: Visual Stimuli and Color Vision

Study Guide - Practice Questions