Physics Principles and Problems 2009

Section 16.2 : The Wave Nature of Light

Self-Check Quizzes

1
Why can a prism break white light up into different colors?
A)Different colored light has different wavelengths.
B)Certain parts of a prism only let certain colors of light pass through.
C)The colors are changed by addition.
D)This is an example of color by subtraction.
2
What color(s) are reflected from a yellow flower petal?
A)red and blue
B)yellow
C)yellow and red
D)all colors of the spectrum
3
If you were to place the polarizing axes of two polarizing filters at 90° to each other, what percent of light intensity would pass through?
A)0
B)50%
C)100%
D)75%
4
The speed of light in a vacuum is constant. Once the frequency of the light wave is known, the _____ can be determined.
A)distance from the source
B)Doppler shift
C)color
D)wavelength
5
What did Hubble observe to conclude that the universe is expanding?
A)The Doppler effect was not useful for distant objects.
B)It took longer for light to reach Earth from some galaxies than from others.
C)The galaxies were sending red-shifted light to Earth.
D)The light from distant galaxies was refracted by planets and other objects in space.
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