wave
Which of the following processes is inherently a wave effect and can be explained by wave theory of light?
Interference
Match the type of electromagnetic wave with a process which normally produces it. Radio waves are produced by Radio waves are produced by Drop zone electric circuits. correct Toggle Button Unavailable.
Radio waves are produced by->electric circuits. Infrared waves are produced by->warm bodies. Ultraviolet waves are produced by->Choice, excited atoms.
A charge will produce a magnetic field if the charge is
accelerating traveling with a constant velocity
In Young's double slit experiment, some of the places on the screen are dark, meaning almost no light strikes those points. These are caused by the___interference of the two waves.
destructive
Thin-film interference shows up as many colors on the film. The reason we see different colors is that the light from the top surface interferes with the light coming from the bottom surface. The colors that_______interfere are removed and we observe only the mixture of colors that remains.
destructive
True or false: In a diffraction pattern formed using a narrow slit, light waves reaching the center of the screen from different parts of the slit will travel different distances. True false question.
false
A diffraction grating is a device that makes light interfere from___slits.
multiple
The law of reflection is obeyed by light that is/-----reflected off of a surface.
specular
In a thin-film interface, two waves are reflected from the surface. As the two reflected waves are almost perpendicular to the surface of the film, the difference in distance traveled by the waves will be _____ the thickness of the film. Multiple choice question. half of
twice
The wavelength of visible light is a few hundred
10^-9
Match the formula on the left with its correct interpretation on the right for a single slit diffraction pattern.
2 The width of the bright spot The width of the bright spot
In a Young's double-slit experiment, in order to see destructive interference fringes (dark spots), the path difference can equal ______.
2.5λ λ2
In a Young's double-slit experiment, in order to see constructive interference fringes (bright spots), the path difference can equal ______.
3λ 2λ
Use the figure to help match the wavelength of the incoming light with the type of cone that will primarily be stimulated.
450 nm->S cones 530 nm->m 650 nm->L
Which of the following lengths could be a wavelength of visible light?
700 nm 0.6 μm
The best telescopes have large openings for light to enter through because the large aperture will minimize____which would cause the images to be blurry and overlap.
: diffraction
Match the motion of the charged particle with the field(s) it generates.
A moving charge generates->an electric and a magnetic field. A static charge generates->an electric field.
Which of the following can cause a phase difference between two similar waves? (Check all that apply.)
A reflection A difference in how far they traveled
What are some types of interference fringes in the two slit pattern? Multiple select question.
Bright , Dark
Match the terms on the left with the descriptions on the right. Diffraction
Diffraction->The effects from a single opening Interference->The effects from multiple openings Fringe->The bright and dark spots within a pattern of light due to overlapping waves
Match the type of reflection on the left with the directionality of the reflection on the right.
In specular reflection,->all light is reflected according to the law of reflection; it is all reflected in the same direction. In diffuse reflection,->light is scattered in all directions, with some of the light being absorbed.
When 600-nm light (orange) enters the eye, it stimulates
M cones. L cones.
Match the type of electromagnetic wave with a process which normally produces it.
Radio waves are produced by->electric circuits Infrared waves are produced by->warm bodied ultraviolet waves are produced by excited atoms.
Match the mixtures of colored light on the left with the resulting perceived color on the right.
Red and blue combine to form->purple Red and green combine to form->yellow Green, red and blue combine to form->white
Which of the following statements are true for the colors reflected by an oil film? (Check all that apply.) Multiple select question.
The colors reflected by an oil film depend on the angle of the incident light. The colors reflected by an oil film depends on the angle of the reflected light. The colors reflected by an oil film depend on the thickness of the oil film.
For an electromagnetic wave, which of the following are always perpendicular to the electric field?
The magnetic field The direction of travel
Which of the following explanations are correct for why we see different colors in thin-film interference? Multiple select question.
The path difference for different colored light will be different; so for the same thickness, different colors will have different interference. Some colors are missing, changing the reflection from white to the addition of the colors that are present.
Why is a crystal birefringent?
The speed light travels in the crystal is dependent on the direction in which the light is polarized. It has an anisotropic crystal structure.
If we send two different wavelengths through a grating at the same time and just consider the m=2 fringe, where will the longer wavelength be in relation to the shorter wavelength? Multiple choice question.
Toward the outside (farther away from the center)
Separating colors out of a beam of white light can be undone by
a second prism
In specular reflection, light Multiple select question.
bounces off the surface. obeys the law of reflection.
Each type of cone responds differently to a wavelength of light. The response of the three clarifies how our brains distinguish
color
When light is passed through a diffraction grating, the location of the bright spot of a wavelength on the screen is determined by its wavelength. Thus, if we know all the distances, we can determine the
color
In an anisotropic crystal, the atoms are arranged in a complicated structure. This causes light of different polarizations to travel in _____. Multiple choice question.
different velocities and different directions
While both are the result of overlapping waves or portions of waves,diffractionis usually applied to effects due to a single source or slit while interference is applied to those effects that are due to multiple sources or slits.
diffraction,interference
When light reflects off of a surface and is scattered in all directions, it is called _____ reflection.
diffuse
When light somewhat penetrates the surface of a material and reflects in all directions, with some of the light being absorbed, the reflection is called
diffuse
When a light wave passes through a calcite crystal, two waves are formed. The amount of light bending for an extraordinary wave depends on the _____.
direction of the light beam relative to the crystal lattice of the calcite crystal
When a light wave passes through a calcite crystal, two waves are formed. The amount of light bending for an extraordinary wave depends on the _____. Multiple choice question.
direction of the light beam relative to the crystal lattice of the calcite crystal
One major difference between an electromagnetic wave and other types of waves is that electromagnetic waves have a fixed speed, c. This means the wavelength times the frequency always gives the same number, c. Thus, when the wavelength becomes large, the______becomes small.
frequency
is is either the bright or dark spot in the pattern produced by double slit interference.
fringe
If our eyes perceive an object to be the color red, which of the following colors are being absorbed by pigments in the object?
green blue
If you double distance between the slits in a grating, then the distance from a specific fringe to the center becomes___half was
half
Diffraction is a type of___effect of a single wave from different parts of the same slit.
interference
When light travels through a thin medium and interferes with itself due to the reflection off of two surfaces, it is called thin-film_____
interference
An accelerating charged particle generates a changing electric and magnetic field. These fields move away from the charge. We call these traveling fields a(n)
light
Maxwell predicted the speed at which an electromagnetic wave should travel. He realized it was the same as the speed of in a vacuum.
light
The central bright spot in a single slit diffraction pattern is due to the interference of Multiple select question.
light from the top edge of the slit. light from the center of the slit. light from the bottom edge of the slit.
When two (or more) different colors come into the eye at the same time, they mix and we only see the result of the mixing. When both red and blue light are reflected off an object, we perceive the object to be the color
magenta
A static charge generates an electric field, but when the charge is in motion it also generates a
magnetic
The figure represents an electromagnetic wave. If the vertical plane is the electric field, then the field in the horizontal plane is______
magnetic
The figure shows a section of a circuit in which a sine-wave generator is connected to a wire. Match the symbols (in the left column) with the respective fields they represent (in the right column). p p Drop zone Magnetic field incorrect Toggle Button Unavailable.
p->Electric field q->Magnetic field
In diffusive reflection, light
penetrates the surface. of some wavelengths is absorbed. is reflected in all directions.
When light goes through a polarizer, the component___to the transmission axis of the filter is absorbed.
perpendicular
At the center point of the observation screen (at y = 0), both waves have traveled the same distance. Since they originate from the same wave, they must have the same-----due to traveling the same distance, and thus the waves constructively interfere.
phase
The dark spots in Young's double-slit experiment occur because the two waves will be half a cycle out of___and the difference in distance is just half a wavelength.
phase
The destructive interference in thin-film interference is cause by a_____difference between the two reflected rays.
phase
For objects that do not create their own light (the way light bulbs do), the color we perceive the object to be is due to the light that is----off them. The color we perceive when looking at the object can change if the light source has a different wavelength.
reflected
For objects that do not create their own light (the way light bulbs do), the color we perceive the object to be is due to the light that is_____off them. The color we perceive when looking at the object can change if the light source has a different wavelength.
reflected
During thin-film interference, a difference in the phase of the two waves can be caused by the difference in how far one of the waves traveled and by___reflection at the surfaces.
reflection
When the aperture of a device such as a telescope is too small, the light from pointlike objects diffracts and is blurry on the screen. Thus, the object is said to not be
resolved
Like any other warm bodies, human body also produces infrared rays. In this process, the oscillating atoms within the molecules of the human _____ act as the antennas.
skin
When light is reflected off a surface in way that is similar to a mirror, we call it
specular
When light is reflected off a surface in way that is similar to a mirror, we call it____specular
specular
Rank the following types of reflection by the amount of light that is reflected with the most amount of light reflected at the top. Position 1 of 2 Specular reflection correct toggle button unavailable Specular reflection
specular reflection diffuse reflection
Thin-film interference occurs because two waves interfere from
the top surface of the thin film. the bottom surface of the thin film.
The difference between radio waves and light waves is Multiple select question.
their frequencies their wavelengths.
n Young's double slit experiment, the bright spot at the center is produced by the interference of two waves because
they are in phase. they constructively interfere. they have traveled the same distance to the screen.
An example of birefringence can be observed when a single dot is seen through a calcite crystal since
two
When atoms and molecules are present, they interact with a propagating electromagnetic wave, weakening the wave. Rank the following substances by how far an electromagnetic wave will be able to travel through the given media and remain strong. Arrange them from the strongest at a far distance in the top to the weakest at a far distance in the bottom.
vacuum air water concrete
The---spectrum is made of electromagnetic waves that have wavelengths ranging from 3.9 x 10--7m to 7.5 x 10--7m.
visible
In the seventeenth and eighteenth centuries, scientists debated whether light was a ___ or ___ phenomenon. Multiple select question.
wave.particle/
The _____ present in the light source illuminating an object affects the perceived color. Multiple choice question.
wavelength
To create the first dark spot in a diffraction pattern, the light coming from the top edge of the slit must have a path difference of a full____compared with the path taken by light coming from the lower edge of the slit.
wavelength
If all three primary colors are viewed by the eye from the same place, we perceive the color to be
white
When two (or more) different colors come into the eye at the same time, they mix and we only see the result of the mixing. When both red and green light are reflected off an object, we perceive the object to be the color
yellow
Consider producing a thin-film interface using a soap film. When the soap film gets extremely thin, the path difference between the two surfaces should approach _____. Multiple choice question.
zero.
