Lenses
Lens that causes light to converge
What is convex
I am the part of the eye that converges light on the retina
What is the lens
State the first step of setting up the optical bench
What is placing the brackets on the table
In myopia the human eyeball is slightly ____________
what is elongated
Diverge
I am the muscle that can adjust the size of the pupil
What is the iris
State the second step of setting up the optical bench
What is placing the meter stick in the brackets
In hyperopia the human eyeball is slightly __________
shortened
I am the first transparent membrane of the eye that light passes through
What is the cornea
Explain the placement of the object (candle) and the screen holder + screen on the optical bench
In myopia the _______________ forms inside the eye causing the image on the retina to be blurry
focal point
Upside down (inverted) image
I am the organ that converts light into nerve impulses
What is the retina
To correct for the shortened eyeball in hyperopia a _________________ lens is needed to ________________ the light rays and form the focal point on the retina instead of behind the eye.
What is a convex lens to converge.
Light from an object passes through a concave lens and the following result will be observed on a screen on the opposite side from the object.
No image will form on the screen
I carry the nerve impulse to the brain where what I am seeing is processed
What is the optic nerve
State the type of image that is formed on the screen by a:
a) convex lens
b) concave lens
a) upside down image
b) no image
To correct for the elongated eyeball in myopia a ______________lens is needed to ________________the light rays so the focal point will form on the retina.
what is a concave lens to diverge