Quiz about Elementary Optics

Question 1

A student placed a pencil in a cup of water.  The pencil appears broken because light-

Accepted Answer

bends when it passes through water

Answer

always travels in a straight line

Answer

makes the water in the glass evaporate

Answer

reflects the pencil on the water's surface

Question 2

Question 2.

Accepted Answer

Refraction

Answer

Reflection

Question 3

Which lens represents the path light takes through a diverging lens?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 4

Which figure represents the path light takes through a converging lens?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 5

Which optical device bends light inward?

Accepted Answer

convex lens

Answer

concave lens

Answer

plane mirror

Answer

convex mirror

Question 6

What type of lens creates the image seen in the eyeglasses?

Accepted Answer

concave

Answer

convex

Answer

reflection

Answer

plane

Question 7

A lens that is thicker in the middle than on the outside is called ___.

Accepted Answer

convex

Answer

diverging

Answer

concave

Answer

achromatic

Question 8

A lens that is thinner in the middle than on the outside is called ___.

Accepted Answer

concave

Answer

diverging

Answer

convex

Answer

achromatic

Question 9

Which technology CAPTURES and MAGNIFIES light?

Accepted Answer

Telescope

Answer

Microscope

Answer

Camera

Answer

All of them

Question 10

Which optical technology do we use to observe small things?

Accepted Answer

Microscope

Answer

Telescope

Answer

Camera

Answer

ALL of them

Question 11

Which technology do we use to observe FARAWAY objects?

Accepted Answer

Telescope

Answer

Microscope

Answer

Camera

Answer

All of them

Question 12

Which technology focuses light onto film/sensor so it can create a picture?

Accepted Answer

Camera

Answer

Telescope

Answer

Microscope

Answer

All of them

Question 13

What do all optical technologies need?

Accepted Answer

Light

Answer

Something to focus

Answer

A machine

Answer

A magnifying glass

Question 14

Which type of electromagnetic radiation is the reason we need sunglasses and sunscreen to avoid getting a sunburn?

Accepted Answer

Ultraviolet waves

Answer

X-rays

Answer

Gamma Rays

Answer

Infrared waves

Question 15

What can you see in a room that has no visible light?

Accepted Answer

Nothing at all

Answer

Only bright colored objects

Answer

Only dark colored objects

Answer

Only white objects

Question 16

Model used to explain the characteristics and behavior of light energy. it describes light as energy in the form of waves. the different colors of light have different wavelengths. waves with shorter wavelengths have higher energy than those with longer wavelengths

Accepted Answer

Wave Model of light

Answer

Kepler's Model

Answer

Einstein's Theory of Relativity

Answer

Hawking's Wormhole Theory

Question 17

The production of light by living organisms is

Accepted Answer

bioluminescence

Answer

evolution

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adaptation

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chemistry

Question 18

X-rays are electromagnetic waves.

Accepted Answer

True

Answer

False

Question 19

Which electromagnetic waves are used in ovens and cell phone communications?

Accepted Answer

microwaves

Answer

Infrared rays

Answer

ultraviolet rays

Question 20

Which electromagnetic waves are used in devices such as heat lamps & TV remote controls?

Accepted Answer

infrared rays

Answer

ultraviolet rays

Answer

microwaves

Question 21

Which part of the eye opens in dark places and closes in bright places?

Accepted Answer

Pupil

Answer

Cornea

Answer

Retina

Answer

Lens

Question 22

Which part of the eye is where images are converted to nerve impulses?

Accepted Answer

Optic Nerve

Answer

Retina

Answer

Cornea

Answer

Lens

Question 23

Regulates the amount of light entering the eye and gives the eye its color.

Accepted Answer

Iris

Answer

Lens

Answer

Pupil

Answer

Retina

Question 24

True

Accepted Answer

Cones detect color

Answer

Cone cells detect light and dark

Answer

Rods focus light

Answer

Rods detect color

Question 25

Which statement is true?

Accepted Answer

Rods detect light.

Answer

Rods detect colour.

Answer

Rods are the material which colours the eye.

Answer

All of the above

Question 26

Which type of bulb uses the least energy?

Accepted Answer

LED

Answer

Incandescent

Answer

Fluorescent or CFL

Question 27

Pixel stands for

Accepted Answer

picture element

Answer

image dot

Answer

image element

Answer

none of the above

Question 28

What is this?

Accepted Answer

Opaque

Answer

transparent

Answer

translucent

Question 29

What is this

Accepted Answer

translucent

Answer

opaque

Answer

transparent

Question 30

The water is what

Accepted Answer

transparent

Answer

opaque

Answer

translucent

Question 31

When ALL of the light is blocked

Accepted Answer

opaque

Answer

translucent

Answer

transparent

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