Chapter 8 Multiple Choice Quiz 1

Please answer all questions


1	A virtual image is
		A)	produced by light rays.
		B)	your brain's interpretations of light rays.
		C)	found only on the Internet.
		D)	a real image produced by computer tricks with light.


2	As the angle of an incident ray of light on a water surface increases the angle of the refracted ray
		A)	also increases.
		B)	stays the same.
		C)	decreases.
		D)	none of the above.


3	When viewed straight down (90° to the surface), an incident light ray moving from the water to air is refracted
		A)	away from the normal.
		B)	toward the normal.
		C)	not at all.
		D)	about 49°


4	Light with the lowest frequency (longest wavelength) detected by your eyes is perceived as
		A)	blue.
		B)	green.
		C)	orange.
		D)	red.


5	The index of refraction is based on the ratio of the speed of light in
		A)	two transparent materials.
		B)	air to the speed of light in the transparent material.
		C)	water to the speed of light in the transparent material.
		D)	a vacuum to the speed of light in the transparent material.


6	A mirage is produced because
		A)	warm air has a higher index of refraction than cool air.
		B)	water from oceans and lakes is highly reflective.
		C)	images of water are reflected from the sky.
		D)	light travels faster through air than through water.


7	The shimmering that is observed over a hot surface is
		A)	heat.
		B)	reflections from rising heat.
		C)	changing refraction from the mixing of warm and cool air.
		D)	a mirage.


8	According to the relationship between frequency and energy of light (E = hf), which color of light has more energy?
		A)	blue.
		B)	green.
		C)	orange.
		D)	red.


9	Which of the following cannot be explained with a wave theory of light?
		A)	polarization
		B)	interference
		C)	photoelectric effect
		D)	all of the above


10	Which of the following cannot be explained with a particle theory of light?
		A)	polarization
		B)	quantization of energy
		C)	photoelectric effect
		D)	all of the above

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