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Light Waves
Test Description: Light Waves & Mirrors and Lenses
Instructions: Answer all questions to get your test result.
1) What shape is a mirror that reflects parallel light rays towards a focal point?
A
convex
B
regular
C
flat
D
concave
2) According to the law of reflection, a light ray striking a mirror
A
bounces off the mirror at the same angle it hits
B
bounces off the mirror toward the direction it cames from
C
continues moving through the mirror in the same direction
D
moves into the mirror at a slightly different angle
3) The study of light and the tools that use light
A
optics
B
reflection
C
refraction
D
law of reflection
4) A ray of sunlight moves from the air into the denser medium of a pond. The light ray will
A
speed up
B
not be affected
C
slow down
D
be reflected
5) A convex lens brings rays together at a focal point. The distance from the center of the lens to the focal point is called the
A
image length
B
focal distance
C
focal length
D
focal point
6) Isaac uses a convex lens to create an upside-down image of an object. The image is smaller than the object. The object must be located
A
on the same side of the lens as the image
B
less than one focal length away from the lens
C
exactly at the focal point of the lens
D
more than two focal lengths away from the lens
7) A convex lens
A
has no focal length
B
Always forms a right side up image
C
spreads white light into a color spectrum
D
brings light rays together at a focal point
8) A concave lens produces
A
upside down image
B
only right side up images
C
images upside down and smaller than the object
D
image identical to the object
9) Convex mirrors
A
curved outward, light rays meet at a focal point
B
Curved inward, light rays spread out
C
Curved inward, light rays meet at a focal point
D
Curved outward, light rays spread out
10) The amount and direction that a light ray bends when it enters a new medium depend on the
A
density of the medium
B
angle of incidence
C
speed of sound
D
amount of water in a medium
*select an answer for all questions
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