mse208 exercises

PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 1 - Path Of Light Review Test Submission: Exercise 01H

Review Test Submission: Exercise 01

User Jenna MarshCourse PHS/MSE 208: Patterns in Nature (2014 Fall)Test Exercise 01Started 8/25/14 12:31 PMSubmitted 8/25/14 12:39 PMStatus CompletedAttempt Score 10 out of 10 points Time Elapsed 7 minutesInstructions

Question 1

If you enlarge the pinhole, does the imageSelected Answer: become brighter

Correct Answer: become brighter

Question 2

The path of light going from water to airSelected Answer: is reversible

Correct Answer: is reversible

Question 3

The velocity of light in a uniform glass mediumSelected Answer: is constant

Correct Answer: is constant

Question 4

When you view an object with a pinhole scope, the object is inverted. If you rotate the scope 180 degrees, the image is

Selected Answer: still inverted

Correct Answer: still inverted

Question 5

The path of white light in a uniform medium

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Tuesday, October 28, 2014 9:07:20 PM MST

Selected Answer: is straight for all colors

Correct Answer: is straight for all colors

Question 6

If you punched three holes in the foil of the scope, how many images do you see in the viewer?Selected Answer: three

Correct Answer: three

Question 7

If we consider the human eye as a pinhole camera with the image of an arrow projected on the back of the eye (the "retina"),the image would beSelected Answer: inverted (upside down)

Correct Answer: inverted (upside down)

Question 8

If the Sun's light were to be extinguished at this moment, in what time would we know about it if were were on Venus? (Thedistance to the Sun is 1.5 x 108 km)Selected Answer: in some minutes

Correct Answer: in some minutes

Question 9

The path of light in a glass mediumSelected Answer: is straight

Correct Answer: is straight

Question 10

The velocity of white light in a uniform transparent mediumSelected Answer: is constant for all colors

Correct Answer: is constant for all colors

OKOK

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 2 - Reflection and Refraction Review Test Submission: Exercise 02H



Question 1

A beam of light incident on a flat water surface reflects from the mirror-like surface so that the angle of incidence equals theangle of reflection. The water is wavy. Would individual light beams (individual photons, for example) obey the law of reflectionin this case?Selected Answer: Yes

Correct Answer: Yes

Question 2

If a lens has chromatic aberration, the focal length of red and blue light isSelected Answer: changed

Correct Answer: changed

Question 3

A beam of red light is incident on a glass plate passes the glass/air boundary. What does not change?Selected Answer: energy

Correct Answer: energy

Question 4

A beam of light is traveling in air and crosses into glass. As the light crosses the air/glass boundary, which of the followingoccurs?Selected Answer: a change in wavelength

Correct Answer: a change in wavelength

Question 5

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A beam of red light is traveling in a glass and crosses into air. As the light crosses the boundary, which of the following occurs?Selected Answer: a change in wavelength

Correct Answer: a change in wavelength

Question 6

A beam of blue light in air is incident on a glass plate. Will the beam transmitted through the glass plate emerge parallel to theincident beam?Selected Answer: Yes

Correct Answer: Yes

Question 7

If a lens has chromatic aberration, the focal length of red light compared to that of blue lightSelected Answer: is different

Correct Answer: is different

Question 8

A beam of light, incident on a flat water surface, reflects from the mirror-like surface so that the angle of incidence equals theangle of reflection. The water has waves. Would individual light beams obey the law of reflection in this case?Selected Answer: Yes

Correct Answer: Yes

Question 9

If the focal length of red light is different from that of blue light, the lens has

Selected Answer: chromatic aberration

Correct Answer: chromatic aberration

Question 10

In order to see an object it must

Selected Answer: emit or reflect light

Correct Answer: emit or reflect light

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 3 - Lenses and Fresnel Lenses Review Test Submission: Exercise 03H



Question 1

One disadvantage of using a Fresnel plastic lens over that of a standard quartz convex lens isSelected Answer: quality of the image

Correct Answer: quality of the image

Question 2

If you have a light source a distance from a concave lens and you project the image on a sheet of paper, does the image appearSelected Answer: behind the source

Correct Answer: behind the source

Question 3

If the incident rays are diverging as they come to the lens,as compared to the case the parallel incident rays, the focal point is

Selected Answer: farther from the lens

Correct Answer: farther from the lens

Question 4

The weight of the lens is one advantage of using a Fresnel plastic lens of the same focal length over that of a:Selected Answer: convex lens

Correct Answer: convex lens

Question 5

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If you have two convex lenses with different magnification, which has the larger curvature?Selected Answer: the lens with the smaller focal length

Correct Answer: the lens with the smaller focal length

Question 6

If you have a light source a distance from a convex lens and you project the image on a sheet of paper, does the image appearSelected Answer: inverted

Correct Answer: inverted

Question 7

A virtual image is

Selected Answer: cannot be projected on a screen

Correct Answer: cannot be projected on a screen

Question 8

If you have two convex lenses with different curvatures, which has the greater curvature?Selected Answer: the lens with the shorter focal length

Correct Answer: the lens with the shorter focal length

Question 9

The magnification of a convex lens compared to a Fresnel lens:Selected Answer: can be the same

Correct Answer: can be the same

Question 10

A concave lens is used. Will the image appearSelected Answer: different

Correct Answer: different

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 4 - Life Cycle of Photon Review Test Submission: Exercise 04H



Question 1

Light can be described as having wave-like behavior andSelected Answer: particle-like behavior

Correct Answer: particle-like behavior

Question 2

An electron gaining energy describes:Selected Answer: photon absorption

Correct Answer: photon absorption

Question 3

A photon is emitted (created) with?Selected Answer: an electron losing energy.

Correct Answer: an electron losing energy.

Question 4

An electron losing energy describes:Selected Answer: photon creation

Correct Answer: photon creation

Question 5

A gamma ray is part of the electromagnetic spectrum. Compared to photons of X-rays, a gamma ray has?

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Selected Answer: all of the above

Correct Answer: all of the above

Question 6

Microwaves are part of the electromagnetic spectrum. Compared to photons of visible light, a microwave has?Selected Answer: all of the above


Question 7

A photon is absorbed and vanishes (or dies) with?Selected Answer: an electron gaining energy

Correct Answer: an electron gaining energy

Question 8

Which of the following CANNOT be described as a "photon"?Selected Answer: compressive wave

Correct Answer: compressive wave

Question 9

An electron and positron can recombine with each other and createSelected Answer: a photon

Correct Answer: a photon

Question 10

Which of the following CANNOT be described as a "photon"?Selected Answer: sound wave.

Correct Answer: sound wave.

OKOK

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 5 - Color and the Visible Spectrum Review Test Submission: Exercise 05H



Question 1

When white light is incident on glass about 4% of the incident light is reflected from the air/glass interface (you can seeyourself in a shop window as you walk past). Would some of the red light also be reflected?Selected Answer: Yes

Correct Answer: Yes

Question 2

In the electromagnetic spectrum, as the energy of the radiation increases from radio waves to x-rays, the wavelengthSelected Answer: decreases

Correct Answer: decreases

Question 3

Colored light may have a dominant wavelength orSelected Answer: hue

Correct Answer: hue

Question 4

Which of the following colors could not be represented by a single wavelength of light?Selected Answer: purple

Correct Answer: purple

Question 5

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A wavelength of blue light is 450 nanometers (nm). Is this wavelength longer or shorter than a wavelength of red light?Selected Answer: shorter

Correct Answer: shorter

Question 6

In the electromagnetic spectrum, as the energy of the radiation increases from radio waves to x-rays, the velocitySelected Answer: stays the same

Correct Answer: stays the same

Question 7

What colors are used in a T.V. color monitor?Selected Answer: red, blue and green

Correct Answer: red, blue and green

Question 8

Representing visible light by waves, the wavelength isSelected Answer: the distance from one wave crest to the next

Correct Answer: the distance from one wave crest to the next

Question 9

In the electromagnetic spectrum of visible light, the shortest wavelength is associated with violet, the longest withSelected Answer: red

Correct Answer: red

Question 10

A single photon of one color differs from a photon of another color only by its

Selected Answer: energy

Correct Answer: energy

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 6 - Rainbows & Blue Sky Review Test Submission: Exercise 06H



Question 1

A rainbow not only refracts and disperses light it also

Selected Answer: reflects

Correct Answer: reflects

Question 2

When you have two rainbows, the outer ring of the second (outer) rainbow isSelected Answer: blue

Correct Answer: blue

Question 3

As light is reflected from raindrops, each color emerges at

Selected Answer: a different angle

Correct Answer: a different angle

Question 4

When light encounters a boundary between two transparent materials with different indices of refraction, some of the light istransmitted and some isSelected Answer: reflected

Correct Answer: reflected

Question 5

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The rainbow is an arc of colored light centered aroundSelected Answer: the observer's shadow

Correct Answer: the observer's shadow

Question 6

The observer's shadow is the center of the arc of the

Selected Answer: rainbow

Correct Answer: rainbow

Question 7

If you are admiring a raindrop with a friend you are each seeingSelected Answer: a different rainbow

Correct Answer: a different rainbow

Question 8

The preferential scattering of blue light causes the sky to be blue and the sunsets red. If the scattering by air moleculesanddust was independent of wavelength (no preferential scattering) the color of the sky would beSelected Answer: white

Correct Answer: white

Question 9

If red (instead of blue) light was preferentially scattered, the sunsets would appearSelected Answer: blue


Question 10

If we observe a rainbow when sunlight shines on rain, why don't we see a complete rainbow circle?Selected Answer: the reflection angle limits the arc length

Correct Answer: the reflection angle limits the arc length

OKOK

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 7 - Interference Colors Review Test Submission: Exercise 07H



Question 1

Preferential scattering is called Rayleigh Scattering when it is proportional toSelected Answer: the reciprocal of the wavelength to the 4th power

Correct Answer: the reciprocal of the wavelength to the 4th power

Question 2

In thin-film interference with a transparent film, as the film thickness increases many-fold, the reflected colors fromincidentwhite light becomeSelected Answer: white

Correct Answer: white

Question 3

The colors seen in thin silicon oxide layers on silicon are due toSelected Answer: interference

Correct Answer: interference

Question 4

The sky appears blue because ofSelected Answer: preferential scattering of selected wavelengths

Correct Answer: preferential scattering of selected wavelengths

Question 5

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In birds, preferential scattering leads to a structural color ofSelected Answer: blue


Question 6

True reflection of light from thin film exhibits various colors dependent onSelected Answer: [None Given]

Correct Answer: film thickness

Question 7

A single wavelength light beam incident on a thin film can have the reflected beam either reinforced diminished depending onSelected Answer: film thickness


Question 8

Compared to the dimensions of the wavelength of light,particles that preferentially scatter blue light are

Selected Answer: smaller

Correct Answer: smaller

Question 9

Light going from lower refractive index air to high refractive index glass has a phase change in the reflected beam ofSelected Answer: one-half wavelength

Correct Answer: one-half wavelength

Question 10

Light of one wavelength incident on a thin film will be reduced in reflection if the waves areSelected Answer: out of phase

Correct Answer: out of phase

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 8 - Color Compisition and Polarized Light Review Test Submission: Exercise 08H



Question 1

If you take two polarizer films that are transparent to light and you cross them by 90 degrees, the pair willSelected Answer: become opaque

Correct Answer: become opaque

Question 2

The polarizer can transform circularly polarized light intoSelected Answer: linearly polarized light

Correct Answer: linearly polarized light

Question 3

A pair of complementary colors areSelected Answer: blue and yellow

Correct Answer: blue and yellow

Question 4

White light can be produced by two colors.Selected Answer: Yes

Correct Answer: Yes

Question 5

White light reflected from a glass mirror can be polarized

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Selected Answer: Yes

Correct Answer: Yes

Question 6

For light incident on a glass plate, the Brewster angle is aboutSelected Answer: 56 degrees

Correct Answer: 56 degrees

Question 7

Circularly polarized light reflected at the Brewster angle from a flat sheet of glass will beSelected Answer: fully polarized

Correct Answer: fully polarized

Question 8

The energy levels in the electron transition leading to light emission differ bySelected Answer: one unit of angular momentum

Correct Answer: one unit of angular momentum

Question 9

The Polaroid film used in the optics kit and the lab absorbsSelected Answer: one direction of light oscillations

Correct Answer: one direction of light oscillations

Question 10

The blue color from the sky is due toSelected Answer: scattering

Correct Answer: scattering

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Lesson 9 - Optical Spectroscopy, Neon Lights Review Test Submission: Exercise 09H



Question 1

In solid silicon the outermost electrons are bound by energies of 1.1 eV. Light is absorbed in

Selected Answer: IR portion of the spectrum

Correct Answer: IR portion of the spectrum

Question 2

In silicon the binding energies for the inner-most electrons areSelected Answer: 1.8 eV

Correct Answer: 1.8 eV

Question 3

If you wanted to change the color of a neon light, you wouldSelected Answer: change the gas in the tube

Correct Answer: change the gas in the tube

Question 4

If you observe line spectra, it meansSelected Answer: the electrons have well-defined energy levels

Correct Answer: the electrons have well-defined energy levels

Question 5

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An optical spectrometer measuresSelected Answer: light wavelength

Correct Answer: light wavelength

Question 6

Light can be described by particle-like behavior orSelected Answer: wave-like behavior

Correct Answer: wave-like behavior

Question 7

The light from a heated tungsten filament lies in the energy region on theSelected Answer: visible spectrum

Correct Answer: visible spectrum

Question 8

Light can be emitted when electrons make the transition between two states. The photon energy is equal toSelected Answer: the difference of energy between the two levels

Correct Answer: the difference of energy between the two levels

Question 9

A semiconductor light emitting diode (LED) is one where light is emitted when

Selected Answer: current flows

Correct Answer: current flows

Question 10

A photon energy of 2eV lies inSelected Answer: the visible portion of the spectrum

Correct Answer: the visible portion of the spectrum

OKOK

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ...Part 10 - Electrons in Atoms Review Test Submission: Exercise 10H



Question 1

The energy of a photon in electron volts is given by the constant 1240 divided bySelected Answer: wavelength (nanometers)

Correct Answer: wavelength (nanometers)

Question 2

Comparing the wave behavior of an electron and a photon, electron and X-ray diffractionSelected Answer: are similar

Correct Answer: are similar

Question 3

The emission of electrons by an excited atomSelected Answer: both of the above

Correct Answer: both of the above

Question 4

Atoms that contain more electrons than that of hydrogen have inner most electrons that areSelected Answer: held less firmly

Correct Answer: held more firmly

Question 5

Atoms that contain more electrons than hydrogen,have K-shell photon emissions compared to that of hydrogen

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that are

Selected Answer: larger

Correct Answer: larger

Question 6

When you consider the electormagnetic spectrum containg IR and UV light, both are emitted from

Selected Answer: electrons around the atom

Correct Answer: electrons around the atom

Question 7

In the Bohr atom, the ionization energy isSelected Answer: 13.58 eV

Correct Answer: 13.58 eV

Question 8

Balmer radiation refers to light emitted from an excited atom ofSelected Answer: hydrogen

Correct Answer: hydrogen

Question 9

The energy of an electron in a vacuumSelected Answer: is constant

Correct Answer: varies as the velocity squared

Question 10

The photon energy is given by Planck's constant h times to theSelected Answer: frequency

Correct Answer: frequency

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Lesson 11 - Visible Light, IR, X-Rays, UV Review Test Submission: Exercise 11H



Question 1

The reading for this week covers a wide range of the electromagnetic spectrum. Whichof the four has the longest wavelength?Selected Answer: infrared (IR)Correct Answer: infrared (IR)

Question 2

The amount of x-ray absorption per unit area exposed to the beam depends onSelected Answer: the number of electronsCorrect Answer: the number of electrons

Question 3

Light penetrates through pigments when the energy of the light is inSelected Answer: IRCorrect Answer: IR

Question 4

Compare infrared (IR) and x-ray velocities in vacuum

Selected Answer: both the sameCorrect Answer: both the same

Question 5

The wavelength to energy conversion is " the energy (eV) equals 1240 divided by the wavelength " in wavelength units of?

Selected Answer: nanometersCorrect Answer: nanometers

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Sunday, November 9, 2014 3:57:48 PM MST

Question 6

The reading for this week covers a wide range of the electromagnetic spectrum. Whichof the four has the shortest wavelength?Selected Answer: X-rayCorrect Answer: X-ray

Question 7

The same thickness of iron and lead will absorb the same amount of X-rays.Selected Answer: noCorrect Answer: no

Question 8

The mathematical description of visible light and x-ray absorption is calledSelected Answer: Exponential Decay LawCorrect Answer: Exponential Decay Law

Question 9

Photon absorption in solids depends on the number of electrons that can accept atransfer of energy from the photon. Would youget about the same amount of absorptionof visible light in silicon and silicon dioxide?Selected Answer: noCorrect Answer: no

Question 10

Photon absorption in materials depends primarily onSelected Answer: the sample's electron energy levelsCorrect Answer: the sample's electron energy levels

OKOK

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Lesson 12 - Optical Microscopy Review Test Submission: Exercise 12H



Question 1

ResolutionSelected Answer: refers to the detail seen in a sampleCorrect Answer: refers to the detail seen in a sample

Question 2

The maximum magnification of the van Leewenhoek microscope isSelected Answer: 270Correct Answer: 270

Question 3

Highly curved lens surfaces are associated withSelected Answer: both of the aboveCorrect Answer: both of the above

Question 4

The founder of the science of microbiology isSelected Answer: van LeewenhoekCorrect Answer: van Leewenhoek

Question 5

One hundred microns is a length of

Selected Answer: 0.01 centimetersCorrect Answer: 0.01 centimeters

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Monday, November 10, 2014 7:45:49 PM MST

Question 6

A human hair has the diameter of aboutSelected Answer: 70 micronsCorrect Answer: 70 microns

Question 7

What does it mean for a lens to have a negative focal length?SelectedAnswer: focal point is on the same side of the lens from where the object is

placedCorrectAnswer: focal point is on the same side of the lens from where the object is

placed

Question 8

The magnification of a lens isSelected Answer: greater the smaller the focal lengthCorrect Answer: greater the smaller the focal length

Question 9

A simple magnifier can be madeSelected Answer: from a drop of waterCorrect Answer: from a drop of water

Question 10

A human hair has a diameter of about

Selected Answer: 70 micronsCorrect Answer: 70 microns

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Part 13 - Electron Microscopy Review Test Submission: Exercise 13H



Question 1

In the SEM, the image is formed by a fine electron beam scanned over the sample. Thescan is calledCorrect Answer: raster

Question 2

One attractive feature of optical microscopy isCorrect Answer: ease of use

Question 3

With electronic imaging in the SEM, the images can be madeCorrect Answer: in color

Question 4

The limit on what size can be resolved - irrespective of instrument type is set byCorrect Answer: wavelength

Question 5

What is one of the advantages of electron over optical microscopy?Correct Answer: high resolving power

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Monday, November 17, 2014 12:29:21 PM MST

Question 6

The resolving power of electron microscopes is orders of magnitude better than that ofan optical microscope because the probing beam is orders of magnitude smaller interms ofCorrect Answer: wavelength

Question 7

In electron microscopy, the samples must be covered with a conducting coatingCorrect Answer: true

Question 8

What is one of the disadvantages of electron over optical microscopy?Correct Answer: operates with sample in vacuum

Question 9

The electron mass is about the same asCorrect Answer: neither

Question 10

The three-dimensional appearance in the SEM of the specimen image is a direct resultofCorrect Answer: large depth of field

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PHS/MSE 208: Patterns in Nature (2014 Fall) 2014Fall-T-PHS208-MSE208-72416-71992 Learning Modules ... Part 14 - Analysis of Mars and Air Review Test Submission: Exercise 14H



Question 1

The electron microprobe requires thatSelected Answer: the samples are coated with a conducting filmCorrect Answer: the samples are coated with a conducting film

Question 2

From the Images of Nature Techniques site, what is the range in microns of 1 MeV Heions in mylarSelected Answer: 20 micronsCorrect Answer: 5 microns

Question 3

From the Images of Nature Techniques site. the PIXE detectors are placed on a LiguidNitrogen cold finger forSelected Answer: to cool the detectorCorrect Answer: to cool the detector

Question 4

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In art museums, PIXE techniques can be used to identify pigments in paintingsSelected Answer: yesCorrect Answer: yes

Question 5

In particle-induced x-ray emmission, the sample analysis can be carried out inSelected Answer: bothCorrect Answer: both

Question 6

Comparing the beam size in the lectron microprobe with that in the x-ray luorescesystem, which has the smaller beam diameterSelected Answer: electron beamCorrect Answer: electron beam

Question 7

Analysis of the moon's surface in 1967 did not requireSelected Answer: both of the aboveCorrect Answer: both of the above

Question 8

The remote sensing on Mars Sojourner Rover has a radioactive source the emitsSelected Answer: alpha particlesCorrect Answer: alpha particles

Question 9

The identification of an element from emission of characteristic x-rays requires a sourceof energeticSelected Answer: any of the aboveCorrect Answer: any of the above

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Thursday, December 4, 2014 12:25:30 PM MST

Question 10

The moon in 1967 and Mars in 1997 and 2004 were bombarded by radioactive sourcesin order to determineSelected Answer: composition of the soilCorrect Answer: composition of the soil

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mse208 exercises

Documents

colorscorrect answer

changedcorrect answer

constantcorrect answer

reversiblecorrect answer

threecorrect answer

yescorrect answer

invertedcorrect answer

energycorrect answer