The Eye

Question 1

What 6 qualities make up the structure of the eye

Answer 1

Retina 
Lens
Cornea
Pupil
Ciliary muscle
Suspensory ligaments

Question 2

Function of the iris

Answer 2

Coloured ring of muscle- controls the amount of light entering the eye

Question 3

What is the function of the eye lens

Answer 3

Focused light on retina

Question 4

What is the function of the retina

Answer 4

Light sensitive cells around inside of eye

Question 5

What is the function of the ciliary muscles

Answer 5

Attached to lens by suspensory ligaments- changes thickness of eye

Question 6

What is the function of the pupil

Answer 6

Central hole formed by the iris where light enters eye

Question 7

What is the function of the cornea

Answer 7

Transparent layer that protects the eye

Helps focus light on retina

Question 8

Correction of vision using concave (diverging) and convex (converging) lenses do two things
What is this

Answer 8

Long sight- caused by eyeball being too short or eye lens unable to focus

Short sight- caused by the eyeball being too long of eye lens unable to focus

Question 9

What Is the two two points

What is the range of these two points

Answer 9

Near point- 25cm

Far point- in finitely

Question 10

What is the structure of a camera

Answer 10

A converging lens
Produces a real image
Position of lens is adjusted to focus image on film

Question 11

How does the lens of a camera change depending on the distance of object

Answer 11

Distant object- distant from lens to film must be equal to focal length of camera lens

Nearer object- greater distance from the lens to film

Question 12

What two things is the focal length of a lens determined by

Answer 12

Refractive index of the material from which the lens is made

Curvature of the two surfaces of the lens