AQA Physics Unit 3 Module 1 The eye

Teacher recommended

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Convex lens refract the light to ....
Converge to a point
1 of 16
What is the distance from the centre of the lens to the principal focus called?
The focal length
2 of 16
For an image to be real and inverted on a converging lens where does the object have to be?
Furthur away from the lens than the principal focus
3 of 16
On a convex lens if the image is closer to the lens than the principal focus what is the image?
Virtual, upright and magnified
4 of 16
Magnification =
Image height / Object height
5 of 16
What shape is a diverging (concave) lens?
Thinner in the centre, thicker on the outside
6 of 16
When the image is formed where the light rays appear to come from the image is called.....
Virtual
7 of 16
What is the coloured ring of muscle that controls the amount of light entering the eye?
Iris
8 of 16
What is the cornea?
A transparent layer that protects the eye and helps to focus light onto the retina
9 of 16
The ciliary muscles are attached to the eye lens by what?
Suspensory ligaments
10 of 16
What is the unit for the power of a lens?
Dioptres
11 of 16
What carries nerve impulses from the retina to the brain?
The optic nerve
12 of 16
What type of lens helps someone that is short sighted?
Concave lens
13 of 16
A non-spherical eyeball is called what?
Astigmatism
14 of 16
If images are formed behind the eyeball the person is......
Long sighted
15 of 16
What makes a lens flatter and thinner?
Higher refractice index
16 of 16

Other cards in this set

Card 2

Front

What is the distance from the centre of the lens to the principal focus called?

Back

The focal length

Card 3

Front

For an image to be real and inverted on a converging lens where does the object have to be?

Back

Preview of the front of card 3

Card 4

Front

On a convex lens if the image is closer to the lens than the principal focus what is the image?

Back

Preview of the front of card 4

Card 5

Front

Magnification =

Back

Preview of the front of card 5
View more cards

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Miss KHP

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This is for students studying GCSE Physics (4603)

This specification is for centres outside England and can be sat in modules.

Take a quiz and test yourself. You may like to do it a few times until practice makes perfect.

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