Question 1

Which of these is not a medical application of lasers?

Accepted Answer

A)  Destruction of tumors
B)  Removal of birthmarks
C)  Destroying kidney stones
D)  Corrective eye surgery for near-sightedness
E)  All of these are applications.

Question 2

Which of these is not a characteristic of laser light?

Accepted Answer

A)  Light which is one color.
B)  Waves which are in phase.
C)  Light which is very intense.
D)  Light which does not spread much.
E)  Light which is a combination of wavelengths.

Question 3

Arrange these spectral regions in order of increasing wavelength (infrared, radio waves, ultraviolet, visible) .

Accepted Answer

A)  radio waves 
B)  radio waves 
C)  ultraviolet 
D)  ultraviolet 
E)  infrared < radio waves < ultraviolet < visible

Question 4

Which of these is not a form of spectroscopy?

Accepted Answer

A)  NMR
B)  MRI
C)  photochemistry
D)  phosphorescence
E)  fluorescence

Question 5

The slow emission of light by a glow in the dark toy or watch is best described as ____.

Accepted Answer

A)  photodecomposition
B)  phosphorescence
C)  fluorescence
D)  spectroscopy
E)  Both B and C are correct.

Question 6

Which category of laser is also called diode lasers?

Accepted Answer

A)  Gas
B)  Dye
C)  Photon
D)  Semiconductor
E)  Solid-state

Question 7

Which of the following is true when comparing ultraviolet light to visible light?

Accepted Answer

A)  Ultraviolet light has a longer wavelength than visible light.
B)  Ultraviolet light has a lower frequency than visible light.
C)  Ultraviolet light has a lower energy than visible light.
D)  All of the above are true.
E)  None of the above are true.

Question 8

Wavelength of light is:

Accepted Answer

A)  proportional to frequency and energy.
B)  inversely proportional to frequency and energy.
C)  proportional to frequency and inversely proportional to energy.
D)  inversely proportional to frequency and proportional to energy.

Question 9

The substances responsible for the green color of leaves area class of compounds called:

Accepted Answer

A)  chloroforms.
B)  chlorophylls.
C)  chlorofluorocarbons.
D)  carotenes.
E)  none of the above.

Question 10

Arrange these spectral regions in order of increasing frequency  (x-rays, microwaves, ultraviolet, visible) .

Accepted Answer

A)  microwaves 
B)  microwaves 
C)  ultraviolet 
D)  ultraviolet 
E)  x-rays < microwaves < ultraviolet < visible

Question 11

Which of these colors of visible light has the lowest energy?

Accepted Answer

A)  Red
B)  Orange
C)  Yellow
D)  Blue
E)  Violet

Question 12

Which of the following is true when comparing infrared light to visible light?

Accepted Answer

A)  Infrared light has a longer wavelength than visible light.
B)  Infrared light has a lower frequency than visible light.
C)  Infrared light has a lower energy than visible light.
D)  All of the above.
E)  None of the above.

Question 13

Which of these statements best describes the difference between traditional spectroscopy and NMR?

Accepted Answer

A)  Spectroscopy requires that the sample be in a magnetic field.
B)  NMR utilizes high energy electromagnetic radiation and spectroscopy does not.
C)  NMR utilizes the transitions of hydrogen nuclei while spectroscopy utilizes transitions of electrons.
D)  NMR and spectroscopy are essentially the same.
E)  Both B and C are correct.

Question 14

Which of these processes could occur during electronic relaxation?
I. Photodecomposition
II. Fluorescence
III. Emission of heat

Accepted Answer

A)  I only
B)  I and II
C)  II and III
D)  I and III
E)  I, II, and III

Question 15

The speed of light ______________.

Accepted Answer

A)  increases as frequency increases
B)  increases as wavelength increases
C)  is constant
D)  none of the above

Question 16

Which of these processes can an excited molecule undergo?
I. Photodecomposition
II. Emission of light
III. Emission of heat

Accepted Answer

A)  I only
B)  I and II
C)  II and III
D)  I and III
E)  I, II, and III

Question 17

Magnetic Resonance Imaging (MRI) is based on the spectroscopy of which of these substances ____.

Accepted Answer

A)  hydrogen
B)  carbon
C)  oxygen
D)  electrons
E)  helium A

Question 18

The rapid emission of light by an excited molecule is known as ____.

Accepted Answer

A)  photodecomposition
B)  phosphorescence
C)  fluorescence
D)  spectroscopy
E)  Both B and C are correct. C

Question 19

Which of these statements is not true concerning the nature of light?

Accepted Answer

A)  Light has both particle and wave characteristics.
B)  Particles of light are collectively called photons.
C)  Light travels faster in space than it does on earth.
D)  The wave nature of light has both a magnetic and an electrical component.
E)  The wavelength of light is inversely proportional to the frequency of light. C

Question 20

A graph which shows the change in transition of a nucleus as a function of radio wave frequency is known as a(n) ____.

Accepted Answer

A)  resonance frequency
B)  absorption spectrum
C)  relaxation time
D)  emission spectrum
E)  resonance imaging

Exam 7: Light and Color

Which of these is not a medical application of lasers?

Correct AnswerverifiedShow Answer

Which of these is not a characteristic of laser light?

Correct AnswerverifiedShow Answer

Arrange these spectral regions in order of increasing wavelength (infrared, radio waves, ultraviolet, visible) .

Correct AnswerverifiedShow Answer

Which of these is not a form of spectroscopy?

Correct AnswerverifiedShow Answer

The slow emission of light by a glow in the dark toy or watch is best described as ____.

Correct AnswerverifiedShow Answer

Which category of laser is also called diode lasers?

Correct AnswerverifiedShow Answer

Which of the following is true when comparing ultraviolet light to visible light?

Correct AnswerverifiedShow Answer

Wavelength of light is:

Correct AnswerverifiedShow Answer

The substances responsible for the green color of leaves area class of compounds called:

Correct AnswerverifiedShow Answer

Arrange these spectral regions in order of increasing frequency (x-rays, microwaves, ultraviolet, visible) .

Correct AnswerverifiedShow Answer

Which of these colors of visible light has the lowest energy?

Correct AnswerverifiedShow Answer

Which of the following is true when comparing infrared light to visible light?

Correct AnswerverifiedShow Answer

Which of these statements best describes the difference between traditional spectroscopy and NMR?

Correct AnswerverifiedShow Answer

Which of these processes could occur during electronic relaxation? I. Photodecomposition II. Fluorescence III. Emission of heat

Correct AnswerverifiedShow Answer

The speed of light ______________.

Correct AnswerverifiedShow Answer

Which of these processes can an excited molecule undergo? I. Photodecomposition II. Emission of light III. Emission of heat

Correct AnswerverifiedShow Answer

Magnetic Resonance Imaging (MRI) is based on the spectroscopy of which of these substances ____.

Correct AnswerverifiedA

The rapid emission of light by an excited molecule is known as ____.

Correct AnswerverifiedC

Which of these statements is not true concerning the nature of light?

Correct AnswerverifiedC

A graph which shows the change in transition of a nucleus as a function of radio wave frequency is known as a(n) ____.

Correct AnswerverifiedShow Answer

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