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