Question 1

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

Accepted Answer

Wavelength

Question 2

The amplitude of a light wave is most closely associated with which perceived property?

Accepted Answer

Brightness

Question 3

Which structure in the eye is responsible for changing shape to focus images at different distances, a process known as accommodation?

Accepted Answer

Lens

Question 4

As people age, they often require reading glasses due to a loss of accommodation. Which part of the eye is primarily affected?

Accepted Answer

Lens

Question 5

Which of the following best explains why humans have a blind spot in each eye?

Accepted Answer

It is where the optic nerve leaves the eye, so there are no photoreceptors.

Question 6

Which type of photoreceptor cell is most responsible for color vision and is concentrated in the fovea?

Accepted Answer

Cones

Question 7

A person is walking through a forest at night and can see shapes but not colors. Which photoreceptor cells are primarily active?

Accepted Answer

Rods

Question 8

According to the trichromatic theory of color vision, how many types of cones are there, and what are they sensitive to?

Accepted Answer

Three types; each sensitive to a different range of wavelengths

Question 9

Which theory explains the phenomenon of afterimages, where you see the opposite color after staring at a color for a long time?

Accepted Answer

Opponent process theory

Question 10

If a person has deuteranopia (a type of colorblindness), which cone is not functioning properly?

Accepted Answer

Green cone

Question 11

Which of the following is the correct order in which light passes through the structures of the eye?

Accepted Answer

Cornea → Lens → Retina

Question 12

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

Accepted Answer

Complexity (number of wavelengths)

Question 13

A person is deciding which color shirt to wear. Which type of photoreceptor cell is primarily involved in this process?

Accepted Answer

Cones

Question 14

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 15

Which of the following pairs is correctly matched?

Accepted Answer

Amplitude: brightness

Question 16

Which part of the eye contains the highest concentration of cones and is responsible for sharp central vision?

Accepted Answer

Fovea

Question 17

Which of the following is NOT explained by the trichromatic theory of color vision?

Accepted Answer

Afterimages

Question 18

Which cells are more numerous in the retina and are responsible for vision in low light conditions?

Accepted Answer

Rods

Question 19

Opponent process cells in the nervous system respond to which pairs of colors?

Accepted Answer

Red/Green, Blue/Yellow, Black/White

Question 20

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

Accepted Answer

Iris

Sensation and Perception: Visual Stimuli and Color Vision

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