Lenses Exam

What is the function of the lens in your eye?

• focuses light rays

• bends light rays

• none of the above

• optimizes the light rays

Why does the shape of the lens in your eye change?

• alter the image sent to the brain

• to focus the light

• alter the amount of light

• all of the above

Tags

NGSS.MS-PS4-2

A converging lens is a lens that takes light rays and brings them closer together to converge on a point.

• true

• false

What part of the eye contains muscles that regulate the amount of light that is allowed to enter the eye?

• iris

• lens

• retina

• cornea

In nearsighted eyes, the focal point of the light rays would be behind the retina, so the light rays strike the retina before they have had a chance to cross at the focal point.

• true

• false

Tags

NGSS.MS-PS4-2

A person who is nearsighted cannot see objects that are close to them clearly.

• true

• false

What color pixels are used in a camera?

• red, blue, yellow

• red, blue, green

• red, yellow, blue

• red, yellow, green

The proper term for nearsightedness is (a)   .

What three parts of your eye work together to create a clear image?

• cornea, lens, eye shape

• cornea, iris, eye shape

• cornea, iris, lens

• cornea, lens, pupil

What is the opening of a camera that allows light to pass through?

• aperture

• lens

• focal point

• none of the above