Eye vs Camera _ GCSE Physics

The video explains the structure and function of the eye, detailing its main parts such as the cornea, pupil, iris, and lens. It describes how these components work together to focus light onto the retina, which then sends signals to the brain. The process of accommodation is explained, highlighting how the lens changes shape to focus on objects at different distances. The video also compares the eye to a camera, noting similarities in how both systems focus light and convert it into signals. Despite technological advancements, the eye is praised for its evolutionary efficiency.

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

• To adjust the lens curvature

• To send electrical impulses to the brain

• To reflect light by a fixed amount

• To control the size of the pupil

How does the eye adjust when focusing on a nearby object?

• The lens flattens out

• The ciliary muscles relax

• The suspensory ligaments stretch

• The ciliary muscles contract

What happens to the suspensory ligaments when focusing on a distant object?

• They slacken

• They thicken

• They stretch

• They contract

In what way is a camera's aperture similar to a part of the eye?

• It adjusts the lens curvature

• It processes light into electrical signals

• It controls the amount of light entering

• It reflects light by a fixed amount

What is a key difference between a camera lens and the human eye lens?

• The eye lens cannot focus light

• The camera lens can change shape

• The eye lens has a constant shape

• The camera lens has a constant shape