Reflection
Speed in a Medium
Refraction Diagrams
Wave Changes Entering Medium
Snell's Law
Potpourri
100
A ray of light strikes a plane mirror at an angle of incidence equal to 35º. What is the angle between the incident ray and the reflected ray?
35º
100
As yellow light ( f = 5.09 × 10 14 Hz) travels from zircon into diamond, the speed of the light
A) decreases
B) increases
C) remains the same
A) decreases
100
The diagram below shows a light ray in air incident on a crown glass block.
As the light ray enters the crown glass block, it will
A) slow down and bend toward the normal
B) slow down and bend away from the normal
C) speed up and bend toward the normal
D) speed up and bend away from the normal
A) slow down and bend toward the normal
100
What occurs when light passes from water into flint glass?
A) Its speed decreases, its wavelength becomes shorter, and its frequency remains the same.
B) Its speed decreases, its wavelength becomes shorter, and its frequency increases.
C) Its speed increases, its wavelength becomes longer, and its frequency remains the same.
D) Its speed increases, its wavelength becomes longer, and its frequency decreases.
A) Its speed decreases, its wavelength becomes shorter, and its frequency remains the same.
100
A ray of light traveling in air strikes a block of sodium chloride at an angle of incidence of 30.°. What is the angle of refraction for the light ray in the sodium chloride?
19°
100
As a wave is refracted, which characteristic of the wave will remain unchanged?
A) velocity
B) wavelength
C) frequency
D) direction
C) frequency
200
What is the angle of reflection?
60°
200
What is the speed of light (ƒ = 5.09 x 1014 Hz) in flint glass?
1.81 x 108 m/s
200
The diagram below shows a ray of light being refracted as it passes from air into glass. Which letter represents the angle of refraction for the light ray?
D
200
As a monochromatic light ray passes from air into water, two characteristics of the ray that will not change are
A) wavelength and period
B) frequency and period
C) wavelength and speed
D) frequency and speed
B) frequency and period
200
A ray of monochromatic light traveling in air is incident on an interface with a liquid at an angle of 45, as shown in the diagram below. If the absolute index of refraction of the liquid is 1.4, what is the angle of refraction?
300
200
Which will generally occur when a pulse reaches a boundary between two different media?
A) The entire pulse will be reflected.
B) The entire pulse will be absorbed.
C) The entire pulse will be transmitted.
D) Part of the pulse will be transmitted and part will be reflected
D) Part of the pulse will be transmitted and part will be reflected
300
What is the angle of reflection?
42°
300
In substance X, a ray of light has a speed of 2.04× 108 meters per second. Substance X could be
A) diamond
B) water
C) zircon
D) glycerol
D) glycerol
300
A ray of monochromatic yellow light passes from water through flint glass and into medium X, as shown below.
The absolute index of refraction of medium X is
A) less than 1.33
B) greater than 1.33 and less than 1.52
C) greater than 1.52 and less than 1.66
D) equal to 1.66
D) equal to 1.66
300
If the speed of a wave doubles as it passes from shallow water into deeper water, its wavelength will be
A) unchanged
B) doubled
C) halved
D) quadrupled
B) doubled
300
The diagram below shows a ray of light passing from medium X into air. What is the absolute index of refraction of medium X?
1.73
300
As a periodic wave travels from one medium to another, which pair of the wave's characteristics do not change?
A) period and frequency
B) period and amplitude
C) frequency and velocity
D) amplitude and wavelength
A) period and frequency
400
When a ray is incident upon a plane mirror as shown in the diagram, what is the angle of reflection?
0°
400
Which quantity is equivalent to the product of the absolute index of refraction of water and the speed of light in water?
A) wavelength of light in a vacuum
B) frequency of light in water
C) sine of the angle of incidence
D) speed of light in a vacuum
D) speed of light in a vacuum
400
As represented in the diagram below, the speed of a wave increases as it passes from medium 1 into medium 2. Which arrow best represents the direction of the wave in medium 2?
1
400
The absolute index of refraction of medium Y is twice as great as the absolute index of refraction of medium X. As a light ray travels from medium X into medium Y, the speed of the light ray is
A) halved
B) doubled
C) quartered
D) quadrupled
A) halved
400
The speed of light (ƒ = 5.09 × 1014 Hz) in a transparent material is 0.75 times its speed in air. The absolute index of refraction of the material is approximately
A) 0.75
B) 1.3
C) 2.3
D) 4.0
1.3
400
The accompanying diagram represents a light ray passing from one medium into another.
The light ray must be traveling
A) from medium x into medium y
B) from medium y into medium x
C) faster in medium x than in medium y
D) faster in medium y than in medium x
C) faster in medium x than in medium y
500
When light rays from an object are incident upon an opaque, rough-textured surface, no reflected image of the object can be seen. This phenomenon occurs because of
A) regular reflection
B) diffuse reflection
C) reflected angles not being equal to incident angles
D) reflected angles not being equal to refracted
angles
B) diffuse reflection
500
The speed of light in a material is 2.50 ×108 meters per second. What is the absolute index of refraction of the material?
1.20
500
The diagram below represents a ray of monochromatic light passing from medium X (n = 1.46) into fused quartz. Which path will the refracted ray follow in the quartz?
C
500
When a light wave enters a medium of greater optical density, there will be a decrease in the wave's
A) speed, only
B) frequency, only
C) speed and wavelength
D) frequency and wavelength
C) speed and wavelength
500
In the diagram below, a ray of light enters a transparent medium from air. If angle X is 45° and angle Y is 30°, what is the absolute index of refraction of the medium?
1.41
500
The ray R of monochromatic yellow light shown in the diagram is incident upon a glass surface at an angle of . Which resulting ray is not possible?
C