WorksheetsLight/Optics Quiz
Total questions: 14
Worksheet time: 8mins
Name
Class
Date
1.
Which electromagnetic waves have the highest frequencies and the shortest wavelengths?
a)
microwaves
b)
visible light
c)
gamma rays
2.
Which type of waves are used in broadcasting?
a)
radio waves
b)
infrared rays
c)
x-rays
3.
Which electromagnetic waves are used in devices such as heat lamps & TV remote controls?
a)
ultraviolet rays
b)
microwaves
c)
infrared rays
4.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
5.
If a light ray is shown on a plane mirror with an angle of incidence of 45 degrees, what is the angle of reflection?
a)
15
b)
30
c)
45
d)
90
6.
If you're standing 12 meters in front of a plane mirror, how far away is your image from you?
a)
6
b)
12
c)
18
d)
24
7.
Why does green grass look green?
a)
It reflects all colors except green.
b)
It absorbs all colors except green.
c)
It only absorbs green.
d)
The colors mix to make green.
8.
Which type of lens is shown?
a)
Concave
b)
Convex
c)
Reflective
d)
Refracting
9.
Light that vibrates in only one direction is called
a)
luminous.
b)
illuminated.
c)
visible light.
d)
polarized light.
10.
An object is placed 5 cm in front of a plane mirror, how far behind the mirror is the image of the object?
a)
2.5
b)
5
c)
7.5
d)
10
11.
Which color has the shortest wavelength?
a)
Red
b)
Orange
c)
Green
d)
Violet
12.
A pencil appearing to bend when it is immersed in a glass of water is an example of...
a)
Reflection
b)
Rarefaction
c)
Refraction
d)
Reconstruction
13.
When light passes from one medium to a denser medium _________.
a)
it is bent towards the normal.
b)
it always lies along the normal.
c)
it is unaffected.
d)
it is bent away from the normal.
14.
In a vacuum radio waves, visible light and gamma rays all have the same ________.
a)
frequency
b)
energy
c)
wavelength
d)
speed
100 %
