Question 1

The energy of a photon is directly proportional to its ___________.

Accepted Answer

A)  amplitude 
B)  frequency 
C)  velocity 
D)  wavelength 
A)  amplitude 
B)  frequency 
C)  velocity 
D)  wavelength B

Question 2

The four properties of photons are ________, ________, ________ and ________.

Accepted Answer

A)  size, shape, spin, mass 
B)  frequency, mass, amplitude, wavelength 
C)  frequency, wavelength, velocity, amplitude 
D)  refraction, velocity, spin, amplitude 
A)  size, shape, spin, mass 
B)  frequency, mass, amplitude, wavelength 
C)  frequency, wavelength, velocity, amplitude 
D)  refraction, velocity, spin, amplitude C

Question 3

The _________ of electromagnetic radiation is constant.

Accepted Answer

A)  amplitude 
B)  velocity 
C)  frequency 
D)  wavelength 
A)  amplitude 
B)  velocity 
C)  frequency 
D)  wavelength B

Question 4

Photons with the highest frequencies have the ____________.

Accepted Answer

A)  highest velocity 
B)  lowest energy 
C)  longest wavelengths 
D)  shortest wavelengths 
A)  highest velocity 
B)  lowest energy 
C)  longest wavelengths 
D)  shortest wavelengths

Question 5

The intensity of radiation _________ in _________ proportion to the square of the distance of the object from the source.

Accepted Answer

A)  increases, direct 
B)  decreases, direct 
C)  increases, inverse 
D)  decreases, inverse 
A)  increases, direct 
B)  decreases, direct 
C)  increases, inverse 
D)  decreases, inverse

Question 6

X-rays are usually identified by their __________.

Accepted Answer

A)  energy 
B)  velocity 
C)  wavelength 
D)  hertz 
A)  energy 
B)  velocity 
C)  wavelength 
D)  hertz

Question 7

The smallest quantity of any type of electromagnetic radiation is a(n) ________.

Accepted Answer

A)  photon 
B)  electron 
C)  neutrino 
D)  quark 
A)  photon 
B)  electron 
C)  neutrino 
D)  quark

Question 8

If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its frequency must ___________.

Accepted Answer

A)  double 
B)  increase four times 
C)  decrease by half 
D)  remain constant 
A)  double 
B)  increase four times 
C)  decrease by half 
D)  remain constant

Question 9

Photons tend to interact with matter __________ their wavelength.

Accepted Answer

A)  equal in size to 
B)  larger in size than 
C)  smaller in size than 
D)  unequal in size to 
A)  equal in size to 
B)  larger in size than 
C)  smaller in size than 
D)  unequal in size to

Question 10

If the intensity of light from a flashlight is 4 millilumens (mlm) at a distance of 3 feet, what will the intensity be at 6 feet?

Accepted Answer

A)  0.4 millilumens 
B)  1 millilumen 
C)  2 millilumens 
D)  16 millilumens 
A)  0.4 millilumens 
B)  1 millilumen 
C)  2 millilumens 
D)  16 millilumens

Question 11

The mass equivalent of a 100 KeV photon of radiation can be calculated using the _____.

Accepted Answer

A)  inverse square formula 
B)  equivalent Planck equation 
C)  relativity formula 
D)  Planck quantum equation 
A)  inverse square formula 
B)  equivalent Planck equation 
C)  relativity formula 
D)  Planck quantum equation

Question 12

The lowest energy range of the electromagnetic spectrum is ____________.

Accepted Answer

A)  sound waves 
B)  radio waves 
C)  gamma rays 
D)  microwaves 
A)  sound waves 
B)  radio waves 
C)  gamma rays 
D)  microwaves

Question 13

The reduction of radiation intensity due to scattering and absorption is called _____.

Accepted Answer

A)  reflection 
B)  refraction 
C)  attenuation 
D)  dispersion 
A)  reflection 
B)  refraction 
C)  attenuation 
D)  dispersion

Question 14

What is the velocity of all electromagnetic radiation?

Accepted Answer

A)  8 ×   103 m/s 
B)  2 ×   108 m/s 
C)  3 ×    108 m/s 
D)  4 ×   103 m/s 
A)  8 ×   103 m/s 
B)  2 ×   108 m/s 
C)  3 ×    108 m/s 
D)  4 ×   103 m/s

Question 15

Gamma rays are produced in the ___________ of the atom.

Accepted Answer

A)  outer electron shell 
B)  inner electron shell 
C)  nucleus 
D)  K-shell 
A)  outer electron shell 
B)  inner electron shell 
C)  nucleus 
D)  K-shell

Question 16

The diagnostic range of x-ray energy is _____________.

Accepted Answer

A)  30 to 150 kVp 
B)  200 to 300 kVp 
C)  300 to 1000 kVp 
D)  over 1 MV 
A)  30 to 150 kVp 
B)  200 to 300 kVp 
C)  300 to 1000 kVp 
D)  over 1 MV

Question 17

The rate of rise and fall of a sine wave is called its __________.

Accepted Answer

A)  amplitude 
B)  frequency 
C)  wavelength 
D)  velocity 
A)  amplitude 
B)  frequency 
C)  wavelength 
D)  velocity

Question 18

The intensity of radiation on an object is reduced with distance because the radiation ___________.

Accepted Answer

A)  reduces its velocity 
B)  increases in wavelength 
C)  loses its energy 
D)  is spread out over a greater area 
A)  reduces its velocity 
B)  increases in wavelength 
C)  loses its energy 
D)  is spread out over a greater area

Question 19

What is the electromagnetic wave equation?

Accepted Answer

A)  c = fl 
B)  c = f/l 
C)  c = fv 
D)  c = f-l 
A)  c = fl 
B)  c = f/l 
C)  c = fv 
D)  c = f-l

Question 20

A hertz (Hz) is equal to _____ cycle(s) per second.

Accepted Answer

A)  103 
B)  102 
C)  10 
D)  1 
A)  103 
B)  102 
C)  10 
D)  1

Exam 3: Electromagnetic Energy

The energy of a photon is directly proportional to its ___________.

The four properties of photons are ________, ________, ________ and ________.

The _________ of electromagnetic radiation is constant.

Photons with the highest frequencies have the ____________.

The intensity of radiation _________ in _________ proportion to the square of the distance of the object from the source.

X-rays are usually identified by their __________.

The smallest quantity of any type of electromagnetic radiation is a(n) ________.

If the wavelength of a beam of electromagnetic radiation increases by a factor of 2, then its frequency must ___________.

Photons tend to interact with matter __________ their wavelength.

If the intensity of light from a flashlight is 4 millilumens (mlm) at a distance of 3 feet, what will the intensity be at 6 feet?

The mass equivalent of a 100 KeV photon of radiation can be calculated using the _____.

The lowest energy range of the electromagnetic spectrum is ____________.

The reduction of radiation intensity due to scattering and absorption is called _____.

What is the velocity of all electromagnetic radiation?

Gamma rays are produced in the ___________ of the atom.

The diagnostic range of x-ray energy is _____________.

The rate of rise and fall of a sine wave is called its __________.

The intensity of radiation on an object is reduced with distance because the radiation ___________.

What is the electromagnetic wave equation?

A hertz (Hz) is equal to _____ cycle(s) per second.

Essential Concepts of Radiologic Science

The Structure of Matter

Electricity, Magnetism, and Electromagnetism

The X-ray Imaging System

The X-ray Tube

X-ray Production

X-ray Emission

X-ray Interaction with Matter

Radiographic Image Quality

Control of Scatter Radiation

Screen-Film Radiography

Screen-Film Radiographic Technique

Medical Imaging Computer Science

Computed Radiography

Digital Radiography

Digital Radiographic Technique

Viewing the Digital Image

Screen-Film Radiographic Artifacts

Screen-Film Radiographic Quality Control

Digital Radiographic Artifacts

Digital Radiographic Quality Control

Mammography

Mammography Quality Control

Fluoroscopy

Digital Fluoroscopy

Interventional Radiology

Computed Tomography

Human Biology

Fundamental Principles of Radiobiology

Molecular Radiobiology

Cellular Radiobiology

Deterministic Effects of Radiation

Stochastic Effects of Radiation

Health Physics

Designing for Radiation Protection

Radiography/Fluoroscopy Patient Radiation Dose

Computed Tomography Patient Radiation Dose

Patient Radiation Dose Management

Occupational Radiation Dose Management

Filters

The four properties of photons are , , and .

The intensity of radiation _ in _ proportion to the square of the distance of the object from the source.