1. Chapter 27
Color

2. Color depends mostly on light’s
frequency.
speed.
transmission.
amplitude.
Answer: A

3. Color depends mostly on light’s
frequency.
speed.
transmission.
amplitude.
Answer: A

4. To say that rose petals are red is to say that they
absorb red.
reflect red.
emit red.
transmit red.
Answer: B

5. To say that rose petals are red is to say that they
absorb red.
reflect red.
emit red.
transmit red.
Answer: B

6. The colored light that passes through a piece of transparent blue glass is
yellow, the opposite color of blue.
actually green.
red minus magenta.
Answer: A

7. The colored light that passes through a piece of transparent blue glass is
yellow, the opposite color of blue.
actually green.
red minus magenta.
Answer: A
Comment: Why do children correctly answer this while some overly cautious adults don’t?

8. The solar radiation curve is
the path the Sun takes at nighttime.
the path the Sun takes at all times of day.
a plot of brightness versus frequency of sunlight.
a plot of wavelength versus frequency of sunlight.
Answer: C

9. The solar radiation curve is
the path the Sun takes at nighttime.
the path the Sun takes at all times of day.
a plot of brightness versus frequency of sunlight.
a plot of wavelength versus frequency of sunlight.
Answer: C
Comment: Such a curve is shown in Figure 27.7.

10. The color of newer fire engines and tennis balls
is consistent with the solar radiation curve.
is not consistent with the solar radiation curve.
has nothing to do with the solar radiation curve.
led to the formulation of the solar radiation curve.
Answer: A

11. The color of newer fire engines and tennis balls
is consistent with the solar radiation curve.
is not consistent with the solar radiation curve.
has nothing to do with the solar radiation curve.
led to the formulation of the solar radiation curve.
Answer: A

12. The color to which our eyes are most sensitive is
red.
yellow.
yellowish green.
blue.
Answer: C

13. The color to which our eyes are most sensitive is
red.
yellow.
yellowish green.
blue.
Answer: C

14. When red and blue light are overlapped, the color produced is
magenta.
yellow.
cyan.
white.
Answer: A

15. When red and blue light are overlapped, the color produced is
magenta.
yellow.
cyan.
white.
Answer: A

16. A mixture of tiny magenta and yellow dots on a printed page appears
red.
yellow.
blue.
green.
Answer: A

17. A mixture of tiny magenta and yellow dots on a printed page appears
red.
yellow.
blue.
green.
Answer: A

18. The colors on the cover of your physics book are due to
color addition.
color subtraction.
color interference.
scattering.
Answer: B

19. The colors on the cover of your physics book are due to
color addition.
color subtraction.
color interference.
scattering.
Answer: B

20. When transparent yellow, magenta, and cyan filters are overlapped, the result is
white.
red.
infrared.
black.
Answer: D

21. When transparent yellow, magenta, and cyan filters are overlapped, the result is
white.
red.
infrared.
black.
Answer: D
Comment: See Figure

22. The complementary color of blue is
magenta.
yellow.
cyan.
white.
Answer: B

23. The complementary color of blue is
magenta.
yellow.
cyan.
white.
Answer: B

24. How many colors of ink were used to print the colored photos in your textbook?
One plus black
Two plus black
Three plus black
Four plus black
Answer: C

25. How many colors of ink were used to print the colored photos in your textbook?
One plus black
Two plus black
Three plus black
Four plus black
Answer: C

26. For mixing pigments or dyes, the primary colors are magenta, cyan, and
red.
green.
yellow.
blue.
Answer: C

27. For mixing pigments or dyes, the primary colors are magenta, cyan, and
red.
green.
yellow.
blue.
Answer: C

28. The redness of a sunup or sunset is due mostly to light that hasn’t been
absorbed.
transmitted.
scattered.
polarized.
Answer: C

29. The redness of a sunup or sunset is due mostly to light that hasn’t been
absorbed.
transmitted.
scattered.
polarized.
Answer: C

30. The blueness of the daytime sky is due mostly to light
scattering.
absorption.
transmission.
reflection.
Answer: A

31. The blueness of the daytime sky is due mostly to light
scattering.
absorption.
transmission.
reflection.
Answer: A

32. The color of light that passes most readily through a thick atmosphere is
red.
white.
blue.
violet.
Answer: A

33. The color of light that passes most readily through a thick atmosphere is
red.
white.
blue.
violet.
Answer: A

34. When relatively large particles contribute to the mix of particles in the atmosphere, the sky is
bluish.
reddish.
whitish.
greenish.
Answer: C

35. When relatively large particles contribute to the mix of particles in the atmosphere, the sky is
bluish.
reddish.
whitish.
greenish.
Answer: C

36. If molecules in the sky scattered low-frequency light more than high-frequency light, the color of the sky at noon would be
red.
green.
blue.
white.
Answer: A

37. If molecules in the sky scattered low-frequency light more than high-frequency light, the color of the sky at noon would be
red.
green.
blue.
white.
Answer: A

38. The greenish blue of ocean water is due mostly to the absorption of
scattered light.
infrared light.
ultraviolet light.
reflected light.
Answer: B

39. The greenish blue of ocean water is due mostly to the absorption of
scattered light.
infrared light.
ultraviolet light.
reflected light.
Answer: B

40. Clouds are white because of scattering from
a large variety of particle sizes.
tiny particles.
medium-size particles
large particles.
Answer: A

41. Clouds are white because of scattering from
a large variety of particle sizes.
tiny particles.
medium-size particles
large particles.
Answer: A