Question 1

What type of laser is the Nd:YAG laser?

Accepted Answer

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

Question 2

Which of these characteristics of light is responsible for determining its color?

Accepted Answer

A)  Magnetic component 
B)  Electrical component 
C)  Speed 
D)  Amplitude 
E)  Wavelength 
A)  Magnetic component 
B)  Electrical component 
C)  Speed 
D)  Amplitude 
E)  Wavelength E

Question 3

Which of these scientists is credited with the discovery of X-rays?

Accepted Answer

A)  Bohr 
B)  Hertz 
C)  Heisenberg 
D)  Roentgen 
E)  Einstein 
A)  Bohr 
B)  Hertz 
C)  Heisenberg 
D)  Roentgen 
E)  Einstein D

Question 4

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  component and an electrical component. 
E)  The wavelength of light is inversely proportional to the frequency of light. 
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  component and an electrical component. 
E)  The wavelength of light is inversely proportional to the frequency of light.

Question 5

Which of these forms of electromagnetic radiation has the highest energy?

Accepted Answer

A)  X-rays 
B)  Microwaves 
C)  Gamma rays 
D)  Radio waves 
E)  Infrared  rays 
A)  X-rays 
B)  Microwaves 
C)  Gamma rays 
D)  Radio waves 
E)  Infrared  rays

Question 6

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

Accepted Answer

A)  photodecomposition 
B)  phosphorescence 
C)  fluorescence 
D)  spectroscopy 
E)  luminescence 
A)  photodecomposition 
B)  phosphorescence 
C)  fluorescence 
D)  spectroscopy 
E)  luminescence

Question 7

A graph that shows the change in the transition of a nucleus as a function of radio wave frequency is known as _____.

Accepted Answer

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

Question 8

The wavelength of visible light ranges from 400 _____ to 780 _____.

Accepted Answer

A)  micrometers; nanometers 
B)  kilometers; meters 
C)  meters; meters 
D)  millimeters; centimeters 
E)  nanometers; nanometers 
A)  micrometers; nanometers 
B)  kilometers; meters 
C)  meters; meters 
D)  millimeters; centimeters 
E)  nanometers; nanometers

Question 9

An FM radio station, broadcasts at a frequency of 1.039 × 108 s − 1. What is the wavelength of the radio waves, in meters? c = 3 × 108 m/s

Accepted Answer

A)  0.346 m 
B)  2.89 m 
C)  3.11 × 108 m 
D)  3.11 × 1016 m 
E)  3.0 × 10 − 9 m 
A)  0.346 m 
B)  2.89 m 
C)  3.11 × 108 m 
D)  3.11 × 1016 m 
E)  3.0 × 10 − 9 m

Question 10

Which one of the following categories of lasers utilize an organic substance in a liquid solution?

Accepted Answer

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

Question 11

The wavelengths of green and red lights are 500 nm and 700 nm, respectively. Which of the following statements is correct?

Accepted Answer

A)  The frequency of green light is more than the frequency of red light. 
B)  The frequency of green light is less than the frequency of red light. 
C)  The energy of green light is less than the energy of red light. 
D)  The frequency of green light is equal to the frequency of red light. 
E)  The energy of green light is equal to the energy of red light. 
A)  The frequency of green light is more than the frequency of red light. 
B)  The frequency of green light is less than the frequency of red light. 
C)  The energy of green light is less than the energy of red light. 
D)  The frequency of green light is equal to the frequency of red light. 
E)  The energy of green light is equal to the energy of red light.

Question 12

Which of these is not an application of lasers?

Accepted Answer

A)  Compact discs 
B)  Imaging tissues 
C)  Supermarket scanners 
D)  Surveying equipment 
E)  Aiming devices 
A)  Compact discs 
B)  Imaging tissues 
C)  Supermarket scanners 
D)  Surveying equipment 
E)  Aiming devices

Question 13

The time required for a nucleus to return to its original orientation after a transition is known as  _____.

Accepted Answer

A)  resonance time 
B)  transition time 
C)  emission time 
D)  absorption time 
E)  relaxation time 
A)  resonance time 
B)  transition time 
C)  emission time 
D)  absorption time 
E)  relaxation time

Question 14

Which one of the following categories of lasers have the unique feature of wavelength tunability?

Accepted Answer

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

Question 15

Energy of light is _____.

Accepted Answer

A)  proportional to  its  frequency and wavelength 
B)  inversely proportional to  its  frequency and wavelength 
C)  proportional to its  frequency and inversely proportional to  its  wavelength 
D)  inversely proportional to  its  frequency and proportional to  its  wavelength 
E)  independent of its frequency and energy 
A)  proportional to  its  frequency and wavelength 
B)  inversely proportional to  its  frequency and wavelength 
C)  proportional to its  frequency and inversely proportional to  its  wavelength 
D)  inversely proportional to  its  frequency and proportional to  its  wavelength 
E)  independent of its frequency and energy

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

Question 17

Arrange these spectral regions in order of increasing frequency  (X-rays, Microwaves, Ultraviolet, Visible).

Accepted Answer

A)  Microwaves < Visible < Ultraviolet < X-rays 
B)  Microwaves < Visible < X-rays < Ultraviolet 
C)  Ultraviolet < X-rays < Visible < Microwaves 
D)  Ultraviolet < Visible < X-rays < Microwaves 
E)  X-rays < Microwaves < Ultraviolet < Visible 
A)  Microwaves < Visible < Ultraviolet < X-rays 
B)  Microwaves < Visible < X-rays < Ultraviolet 
C)  Ultraviolet < X-rays < Visible < Microwaves 
D)  Ultraviolet < Visible < X-rays < Microwaves 
E)  X-rays < Microwaves < Ultraviolet < Visible

Question 18

Which of these forms of electromagnetic radiation can contribute to an increased risk of cancer?
I. Gamma radiation
II. Infrared  radiation
III. Ultraviolet  radiation
IV. Microwave  radiation

Accepted Answer

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

Question 19

Which of these is not an application of gas lasers?

Accepted Answer

A)  Gas lasers are used in the removal of tumors. 
B)  Gas lasers are used to produce visual effects. 
C)  Gas lasers are used in surveying. 
D)  Gas lasers are used as a cutting guide in manufacturing. 
E)  Gas lasers are used as an alignment tool for optics. 
A)  Gas lasers are used in the removal of tumors. 
B)  Gas lasers are used to produce visual effects. 
C)  Gas lasers are used in surveying. 
D)  Gas lasers are used as a cutting guide in manufacturing. 
E)  Gas lasers are used as an alignment tool for optics.

Question 20

Which of these processes involve/involves the emission of light by the relaxation of excited electrons?

Accepted Answer

A)  Photodecomposition 
B)  Phosphorescence 
C)  Fluorescence 
D)  Spectroscopy 
E)  Both phosphorescence and fluorescence 
A)  Photodecomposition 
B)  Phosphorescence 
C)  Fluorescence 
D)  Spectroscopy 
E)  Both phosphorescence and fluorescence

What type of laser is the Nd:YAG laser?

Which of these characteristics of light is responsible for determining its color?

Which of these scientists is credited with the discovery of X-rays?

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

Which of these forms of electromagnetic radiation has the highest energy?

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

A graph that shows the change in the transition of a nucleus as a function of radio wave frequency is known as _____.

The wavelength of visible light ranges from 400 _ to 780 _.

An FM radio station, broadcasts at a frequency of 1.039 × 10⁸ s^{− 1}. What is the wavelength of the radio waves, in meters? c = 3 × 10⁸ m/s

Which one of the following categories of lasers utilize an organic substance in a liquid solution?

The wavelengths of green and red lights are 500 nm and 700 nm, respectively. Which of the following statements is correct?

Which of these is not an application of lasers?

The time required for a nucleus to return to its original orientation after a transition is known as _____.

Which one of the following categories of lasers have the unique feature of wavelength tunability?

Energy of light is _____.

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

Arrange these spectral regions in order of increasing frequency (X-rays, Microwaves, Ultraviolet, Visible).

Which of these forms of electromagnetic radiation can contribute to an increased risk of cancer? I. Gamma radiation II. Infrared radiation III. Ultraviolet radiation IV. Microwave radiation

Which of these is not an application of gas lasers?

Which of these processes involve/involves the emission of light by the relaxation of excited electrons?

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Exam 7: Light and Color

What type of laser is the Nd:YAG laser?

Which of these characteristics of light is responsible for determining its color?

Which of these scientists is credited with the discovery of X-rays?

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

Which of these forms of electromagnetic radiation has the highest energy?

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

A graph that shows the change in the transition of a nucleus as a function of radio wave frequency is known as _____.

The wavelength of visible light ranges from 400 _____ to 780 _____.

An FM radio station, broadcasts at a frequency of 1.039 × 108 s − 1. What is the wavelength of the radio waves, in meters? c = 3 × 108 m/s

Which one of the following categories of lasers utilize an organic substance in a liquid solution?

The wavelengths of green and red lights are 500 nm and 700 nm, respectively. Which of the following statements is correct?

Which of these is not an application of lasers?

The time required for a nucleus to return to its original orientation after a transition is known as _____.

Which one of the following categories of lasers have the unique feature of wavelength tunability?

Energy of light is _____.

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

Arrange these spectral regions in order of increasing frequency (X-rays, Microwaves, Ultraviolet, Visible).

Which of these forms of electromagnetic radiation can contribute to an increased risk of cancer? I. Gamma radiation II. Infrared radiation III. Ultraviolet radiation IV. Microwave radiation

Which of these is not an application of gas lasers?

Which of these processes involve/involves the emission of light by the relaxation of excited electrons?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

Filters

The wavelength of visible light ranges from 400 _ to 780 _.

An FM radio station, broadcasts at a frequency of 1.039 × 10⁸ s^{− 1}. What is the wavelength of the radio waves, in meters? c = 3 × 10⁸ m/s