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Worksheets

Optics

Total questions: 63

Worksheet time: 1hrs 8mins

Name
Class
Date
1.
The lowest part of the wave is?
a)
crest
b)
trough
c)
rarefaction
d)
wavelength
2.
The highest point on a wave
a)
trough
b)
amplitude
c)
crest
d)
wavelength
3.
Material that allows light to pass through allowing you to see "clearly" to the other side
a)
opaque
b)
translucent
c)
transparent
4.
Light travels in a straight line
a)
True
b)
False
5.

High frequency equals

a)

high energy

b)

low energy

c)

no change in energy

d)

none of the above

6.

The distance between 2 crests or troughs

a)

wavelength

b)

amplitude

c)

frequency

d)

wave speed

7.

The number of waves that pass in a given amount of time.

a)

wavelength

b)

wave speed

c)

amplitude

d)

frequency

8.
Which images are opaque?
a)
A & C
b)
A,C,E, & F
c)
D, E, & F
d)
A & E
9.
What does refletion mean?
a)
It is when the light changes the material and the direction of it changes as well. 
b)
It is when the material is rebounding the light.
10.
Which explains why the fork looks different under water?
a)
light can't pass through the glass
b)
the wavelength of light lengthens
c)
the amount of light increases when going through water
d)
light is refracted at an angle
11.
The Law of Reflection:
The angle of incidence is _________ the angle of reflection
a)
bigger than
b)
the same as
c)
smaller than
12.
Luminous means...
a)
Gives out its own light
b)
Reflects light from other things
13.
Opaque means...
a)
No light passes through it
b)
All light passes through it
c)
Some light passes through it
14.
Blurs light as it passes through
a)
Transparent
b)
Translucent
c)
Opaque
d)
Refraction
15.
If light strikes a mirror at a 50⁰ angle, what angle will it come off of the mirror?
a)
50⁰
b)
70⁰
c)
45⁰
d)
30⁰
16.
Which color absorbs all light?
a)
White
b)
Black
c)
Orange
d)
Green
17.
Light can travel through empty space.
a)
True
b)
False
18.

You have cool glow-in-the-dark stickers of DNA. This is an example of

a)

fluorescence

b)

chemiluminescence

c)

phosphorescence

d)

incandescence

19.
All of the following are sources of light except ______________
a)
the sun
b)
a light bulb
c)
fire
d)
the moon
20.
A specific type of light that is produced by living organisms is called _______. 
a)
fluorescence
b)
chemiluminescence
c)
bioluminescence
d)
incandescence
21.
The type of light energy that is stored by certain particles for a period of time is called ________.
a)
fluorescence
b)
reflection
c)
incandescence
d)
phosphorescence
22.

What type of reflection is shown in the image?

a)

Regular reflection

b)

Diffuse reflection

c)

Total internal reflection

23.

The production of light energy when an object is heated describes which source of light?

a)

Fluorescence

b)

Incandescence

c)

Chemiluminescence

d)

Triboluminescence

24.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
25.
The type of light humans can see is called ___________ light.
a)
electromagnetic
b)
red
c)
white
d)
visible
26.

what image is this

a)

Rough

b)

smooth

c)

scattered

27.

________________ is an imaginary line perpendicular to the surface

a)

Normal line

b)

Incident line

c)

Reflected line

28.
a real image...
a)
is produced by virtual rays and can be projected on a screen
b)
is produced by real rays and cannot be projected on a screen
c)
is produced by virtual images and cannot be projected on a screen
d)
is produced by real rays and can be projected on a screen
29.
A virtual image is a copy of an object formed at the location from which the light rays appear to come.
a)
True
b)
false
30.
a flat sheet of glass that has a smooth, silver-colored coating on one side
a)
plane mirror
b)
concave mirror
c)
convex mirror
d)
solid mirror
31.
A light ray hits a plane surface at 20 degrees. What is the angle between the incident and reflected rays. 
a)
20o
b)
40o
c)
70o
d)
30o
32.
This is an example of a _____________ mirror
a)
Concave
b)
Convex
c)
Plane
d)
Magnifying
33.
The following is a picture of what type of mirror? 
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
34.
The following is a picture of what type of mirror? 
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
35.
An image that you can see , but does not really exist is called which of the following?
a)
Real Image
b)
Fake Image
c)
Virtual Image
d)
Digital Image
36.
The inside of a spoon is same as 
a)
concave mirror
b)
convex mirror
c)
plane mirror
d)
non of the above
37.
If an incident ray falls on a concave mirror parallel to the principle axis, then sure it will reflects
a)
Through C
b)
Through F
c)
Parallel 
d)
Away from the mirror
38.
If an incident ray passes through C and hits a concave mirror then it will reflects
a)
Parallel
b)
Towards F
c)
Towards C
d)
Away from the mirror
39.
In a concave mirror, if an incident ray passes through F and hits the mirror then it will reflect
a)
Towards C
b)
Towards F
c)
Parallel
d)
Away from the mirror
40.
What does the word "converging" mean?
a)
to separate
b)
to come together
c)
parallel 
d)
perpendicular
41.
Which type of mirror is shown.
a)
Concave
b)
Convex
c)
Specular
d)
Plane
42.
Which type of mirror magnifies a close up image, like a make-up mirror.
a)
Concave
b)
Convex
c)
Specular
d)
Plane
43.
a)
Reflection
b)
Refraction
44.
Light has the lowest velocity in which medium?
flint glass n=1.70
barium glass n=1.60
crown glass n=1.523
water n=1.33
diamond n=2.45
a)
diamond
b)
water
c)
flint glass
d)
barium glass
45.
If the angle of incidence of light traveling through air, and then striking water is 30 degrees what is the angle of refraction? (n=1 air, n=1.33 water)
a)
15 degrees
b)
22 degrees
c)
43 degrees
d)
17 degrees
46.
What is the index of refraction of a refractive liquid if the angle of incidence in the air is 35 degrees and the angle of refraction is 14 degrees?
a)
1.33
b)
2.21
c)
2.37
d)
1.72
47.
Glass has a _____________ index of refraction than air.
a)
Equal
b)
Greater
c)
Less
d)
Impossible to say
48.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
49.
The image formed in a flat mirror is
a)
larger than the object and farther away.
b)
reduced and closer to the mirror.
c)
a real image of the object.
d)
equal to the height and distance of the object.
50.

What happens to light during total internal reflection?

a)

The angle of incidence is greater than the critical angle.

b)

The angle of reflection is the same as the critical angle.

c)

The angle of refraction is less than the critical angle.

d)

The angle of incidence is zero.

51.

Fiber optic cables work because of the principle of _____.

a)

total internal refraction

b)

incomplete internal refraction

c)

total internal reflection

d)

partial internal reflection

52.

When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,

a)

total internal reflection occurs.

b)

angle of refraction is equal to 90 degree.

c)

light is refracted out

d)

light travel in straight line

53.

Sara is using a magnifying glass to closely examine her stamp collection. Which type of lens is found in a magnifying glass.

a)

bifocal

b)

concave

c)

convex

d)

prismatic

54.

Which image CORRECTLY shows how light behaves when it travels from air through glass?

a)
b)
c)
d)
55.
When light moves from a slower medium to a faster medium at an angle, what is the effect?
a)
The wave is super abnormal
b)
The wave turns away from the normal
c)
The wave turns towards the normal
d)
The wave turns towards the normal
56.
This image is...
a)
Inverted and smaller
b)
inverted and bigger
c)
not inverted and smaller
d)
not inverted and bigger
57.
The do will be a _________________ value.
a)
positive
b)
negative
58.
The hi in this picture is negative.
a)
True
b)
False
59.
The value for f is negative in this diagram.
a)
True
b)
False
60.
Magnification is always positive.
a)
True
b)
False
61.
In the thin lens equation, do represents 
a)
Distance of the object from the lens
b)
Distance of the image from the lens
62.

A tree 20 m high is located 40 m from the converging lens of focal length 0.08 m.Calculate the distance from the lens to the image.

a)

0.08 m

b)

0.01 m

c)

0.10 m

d)

0.20 m

63.

What province is Japinder moving to?

a)

Quebec

b)

Nova Scotia

c)

New Brunswick

d)

PEI

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