Optics

Question 1

What lense can correct myopia

Answer 1

Concave

Question 2

Light passes thought this type of lens is converges to the center

This type lens produces an image upside down and enlarged

Like the lens in your eye

Answer 2

Convex

Question 3

What is optics

Answer 3

Study of light and tools that use light

Question 4

What is the lens in your eye and in. Cameras used for

Answer 4

To go as an image

Question 5

What are three optic tools?

Answer 5

Glasses, contacts, and telescope.

Question 6

Mirrors use what type of reflection?

Answer 6

Regular

Question 7

What is the law of reflection?

Answer 7

It states that the angle of reflection equals the angle of incidence.

Question 8

What is regular reflection?

Answer 8

The reflection of parallel light rays in all the same direction

Question 9

What is diffuse reflection?

Answer 9

The reflection of parallel light rays in many different directions.

Question 10

What determines how mirrors form images

Answer 10

The shape

Question 11

A virtual image

Answer 11

A right side up image

Question 12

What is a real image

Answer 12

An upside down image

Question 13

What is a plane mirror? How does it reflect images? Are they larger or smaller?

Answer 13

A plane mirror. It reflects image appears exactly like the object. They the same size.

Question 14

What is a convex mirror? How does it reflect images?

Answer 14

It is curved outward. And reflects images to look smaller.

Question 15

What is a concave lens? How does it reflect pictures ?

Answer 15

It is curved inward.

Question 16

What is a focal point?

Answer 16

The point where light rays meet.

Question 17

How do lens form images?

Answer 17

By refracting light.

Question 18

How does refraction occur when light goes though a medium?

Answer 18

The light keeps going forward in a slightly different direction.

Question 19

How do light waves travel relative to the normal from a less dense medium to a Denser medium?

Answer 19

The Denser object will redact more light.

Question 20

How do light waves travel relative to the norm from a denser medium to a less dense medium?

Answer 20

A less dense object refracts less light.

Question 21

How is a rainbow formed?

Answer 21

By refraction and reflection of light though spherical water droplets that act as prisms

Question 22

What determines how lenses are formed?

Answer 22

The shape

Question 23

What is a convex lens

Answer 23

It is curved outward

Question 24

What is a concave lens

Answer 24

It is curved inward.

Question 25

What does optical technology make use of ?

Answer 25

Light waves

Question 26

Can lenses and mirrors and lenses be combined to make more powerful optical tools?

Answer 26

Yes

Question 27

What is an eyepiece and what does it do?

Answer 27

It is the other microscope lens that you look though . It is used to look at the image formed by the objective

Question 28

What is the objective lens and what does it do?

Answer 28

It is like a magnifying glass

Question 29

What does a lamp do?

Answer 29

It shines more light on an object.

Question 30

What do the reflecting and refracting telescope have in common ?

Answer 30

* must adjust for he small amount of light received from distant objects * the amount of light can be increased by increasing the diameter of the objective lens or mirror.

Question 31

How are reflecting and refracting telescopes different?

Answer 31

Reflecting telescopes have no objective lens

Question 32

How does a camera work?

Answer 32

It has a convex lens. The Image forms on the film. The images are reduced and upside down. It is a real image.

Question 33

What is a laser?

Answer 33

A devise that produces an intense concentrated beam of light that is brighter than sun light.

Question 34

What is needed to make laser light?

Answer 34

An optical cavity

Question 35

What are three uses of lasers?

Answer 35

Measure great distances and angles Read barcode Holograms

Question 36

What are fiber optics

Answer 36

The technology biased on the use of laser light to send signals through transparent wire.

Question 37

What are the uses of fiber optics.

Answer 37

Communication, medicine,

Question 38

How and why is diffused light used in photography.

Answer 38

It produces a softer appearance than direct light because it spreads light in many directions.

Question 39

What is a natural optical tool?

Answer 39

The eye

Question 40

How does the light gather and focus light?

Answer 40

The eye transmit light, refracts light, and respond to different wavelengths of light. Contains natural lenses that focus objects.

Question 41

What is astigmatism ?

Answer 41

a type of refractive error of the eye

Question 42

What is glaucoma

Answer 42

eye disease in which the optic nerve is damaged in a characteristic pattern

Question 43

Cateracts

Answer 43

A cataract is a clouding of the lens inside the eye which leads to a decrease in vision.

Question 44

Cateract sergery

Answer 44

the removal of the natural lens of the eye

Question 45

Presbyopia

Answer 45

a condition in which the lens of the eye loses its ability to focus, making it difficult to see objects up close.

Question 46

Hyperopia

Answer 46

Farsightedness is greater difficulty seeing near objects than distant objects

Question 47

Myopia

Answer 47

a vision condition in which close objects are seen clearly, but objects farther away appear blurred.

Question 48

Iris

Answer 48

The colored disk around the pupil.