107 - 120
107. Each color of light:
a. has its own wavelength
b. has its own energy
c. is refracted at a different angle
d. all of the above
108. Which of the following colors has the longest wavelength?
a. Red
b. Orange
c. Green
d. Blue
109. What is dispersion?
a. the combining of different colors of light to a single color.
b. the conversion of one color of light into its complementary color.
c. the separation of light into the colors that compose it.
d. the combining of complementary colors to form white light.
110. A glass prism disperses light because
a. each color is reflected at a different angle.
b. each color is refracted at a different angle.
c. each color is reflected at the same angle.
d. each color is refracted at the same angle.
111. When a red filter is placed in front of a source of white light
a. all colors except red are absorbed by the filter
b. only red is absorbed by the filter
c. it allows violet and green light to pass through the filter
d. it allows only violet to pass through the filter
112. If a piece of paper appears blue under illumination by white light, then
a. the paper absorbs all colors except blue and reflects only blue
b. the paper absorbs only blue and reflects all other colors
c. the paper absorbs blue and yellow and reflects green
d. the paper absorbs red and blue and reflects violet
113. When the light from a laser is passed through a prism
a. it passes straight through without bending and without separating into different colors
b. it bends but does not separate into different colors
c. it passes straight through without bending and separates into different colors
d. none of the above
114. As the wavelength of light decreases, the energy of its photons:
a. increases
b. decreases
c. remains the same
d. there is no relationship between wavelength and energy
115. When white light from an incandescent light bulb is passed through a prism,
a. a line spectrum is formed
b. most of the colors in the white light are absorbed by the prism
1
c. only a few of the colors in the white light are absorbed by the prism
d. a continuous spectrum is formed
e. none of the above
116. When you look at white light through a blue filter that is placed in front of a red filter, you see:
a. red light
b. green light
c. a combination of all colors except red
d. a combination of all colors except green
e. black (no light)
117. What is a common unit for the wavelength of visible light?
a. millimeters (mm)
b. centimeters (cm)
c. micrometers (µm)
d. nanometers (nm)
e. picometers (pm)
118. What is a photon?
a. a packet of energy (light)
b. something emitted by an excited atom
c. something out of Star Trek
d. both a and b
119. 12 cm2 is equal to how many mm2
a. 120 mm2
b. 1200 mm2
c. .012 mm2
d. .12 mm2
e. 1.2 mm2
120. Express the number 1.2358 to 3 significant figures
a. 1.2
b. 1.23
c. 1.24
d. 1.236
e. 1.235
2