Section 16.2
The Wave Nature of Light
Practice Test
1.
Red and blue light make __________.
a.
purple
b.
indigo
c.
violet
d.
magenta
Hint
2.
Blue light, which is bent more than red light in a prism, has __________.
a.
a faster speed
b.
a shorter wavelength
c.
a longer wavelength
d.
a lower frequency
Hint
3.
A polarizer and analyzer will block all light if they are at __________ to each other.
a.
right angles
b.
parallel angles
c.
30° angles
d.
180° angles
Hint
4.
A primary light color is a __________.
a.
secondary light color
b.
secondary pigment color
c.
tertiary pigment color
d.
primary pigment color
Hint
5.
When two dyes are mixed together, they make a black dye. These pigments are __________.
a.
primary
b.
complementary
c.
secondary
d.
black and white
Hint
6.
A second prism will change a spectrum back into white light. This shows that __________.
a.
prisms are transparent
b.
white light is composed of colors
c.
light travels at a constant speed
d.
prisms distort images
Hint
7.
To make red light white, add __________.
a.
magenta light
b.
cyan light
c.
green light
d.
yellow light
Hint
8.
Based on Figure 16-11, which of the following wavelengths would most likely be yellow light?
a.
480 nm
b.
400 nm
c.
650 nm
d.
550 nm
Hint
9.
When you wear polarized sunglasses, the Sun's light intensity to your eyes is __________.
a.
reduced by 1/4
b.
doubled
c.
cut in half
d.
completely eliminated
Hint
10.
How do the frequencies of red and violet light compare?
a.
Violet is higher.
b.
Violet is shorter.
c.
They are identical.
d.
They cancel each other out.
Hint
11.
Why does a polarizing filter on a camera block reflections?
a.
Light is polarized by reflection.
b.
Only mirrors can polarize light.
c.
Light is polarized by refraction.
d.
Polarizing filters contain both a polarizer and an analyzer.
Hint
12.
Light behaves as __________.
a.
a particle only
b.
a particle and a wave
c.
neither a particle nor a wave
d.
a wave only
Hint
