IRRSP EXAM QUESTIONS AND ANSWERS
How can exposure to harmful radiation be minimized? - ✔✔ANSWER✔✔>>Through
proper planning, good procedures and practices.
What is the atomic number? - ✔✔ANSWER✔✔>>the number of protons found in the
nucleus of an atom
What is atomic weight? - ✔✔ANSWER✔✔>>the total number of protons and neutrons
in the nucleus of an atom
True or false: a stable isotope is radioactive? - ✔✔ANSWER✔✔>>False, a stable
isotope is not radioactive.
What are the two types of radiation? - ✔✔ANSWER✔✔>>particulate and
electromagnetic
What does particulate radiation consist of? - ✔✔ANSWER✔✔>>Particles that have a
mass and energy (ex: alpha and beta particles)
What does electromagnetic radiation have? - ✔✔ANSWER✔✔>>No mass or charge
and referred to as photons
In the event an unexpected problem occurs during radiography, what should the
radiographer do? - ✔✔ANSWER✔✔>>Refer to the operating and emergency
procedures.
True or false, radiation can be both ionizing or non-ionizing? - ✔✔ANSWER✔✔>>Truw
Are the following ionizing or non-ionizing? Radio waves, microwaves, infrared waves,
visible light? - ✔✔ANSWER✔✔>>Non-ionizing (which lacks energy to alter material)
True or false: X-rays and gamma rays are types of ionizing radiation? -
✔✔ANSWER✔✔>>True (it is ionizing radiation either from primary or secondary
sources, as well as alpha and beta particles)
What is ionization? - ✔✔ANSWER✔✔>>Process of removing an electron from an atom
What are the three most common interactions of X-rays and gamma rays as they pass
through matter? - ✔✔ANSWER✔✔>>Photoelectric effect
Compton effect
, Pair production
Photoelectric effect refers to? - ✔✔ANSWER✔✔>>complete absorption of a photon
Compton effect refers to? - ✔✔ANSWER✔✔>>Part of a photon being absorbed while
the rest is scattered
Radiation coming from the wall or floor that is behind an object being radiographed
would be known as? - ✔✔ANSWER✔✔>>BACK SCATTER
What are the four types of devices required for use by the radiographer and assistant? -
✔✔ANSWER✔✔>>Survey meter
Alarming rate meters
Direct reading/pocket dosimeter
Personnel dosimeter
What does a survey meter measure? - ✔✔ANSWER✔✔>>Immediate dose or exposure
rates and determine the presence of ionizing radiation.
True or false: most industrial radiographers use a Geiger-muller type meter? -
✔✔ANSWER✔✔>>True
What is first thing to do when reading a survey meter? - ✔✔ANSWER✔✔>>Check
batteries
Then check calibration
examples of electromagnetic radiation? - ✔✔ANSWER✔✔>>X-rays, unltraviolet and
Infrared light, microwaves, radio waves
What makes X-rays and gamma rays different from other electromagnetic radiation? -
✔✔ANSWER✔✔>>Their energy level is high enough to penetrate matter
As wavelengths of xray and gamma ray increase, does the penetrating ability increase
or decrease? - ✔✔ANSWER✔✔>>Decrease.
How are gamma rays produced? - ✔✔ANSWER✔✔>>When an unstable atom converts
to a stable atom
An elements atomic weight is also known as the: - ✔✔ANSWER✔✔>>A number of
What happens as a radioactive isotope (radioisotope) decays? -
✔✔ANSWER✔✔>>Atom changes from unstable to stable state - resulting in emission
of radiation
How can exposure to harmful radiation be minimized? - ✔✔ANSWER✔✔>>Through
proper planning, good procedures and practices.
What is the atomic number? - ✔✔ANSWER✔✔>>the number of protons found in the
nucleus of an atom
What is atomic weight? - ✔✔ANSWER✔✔>>the total number of protons and neutrons
in the nucleus of an atom
True or false: a stable isotope is radioactive? - ✔✔ANSWER✔✔>>False, a stable
isotope is not radioactive.
What are the two types of radiation? - ✔✔ANSWER✔✔>>particulate and
electromagnetic
What does particulate radiation consist of? - ✔✔ANSWER✔✔>>Particles that have a
mass and energy (ex: alpha and beta particles)
What does electromagnetic radiation have? - ✔✔ANSWER✔✔>>No mass or charge
and referred to as photons
In the event an unexpected problem occurs during radiography, what should the
radiographer do? - ✔✔ANSWER✔✔>>Refer to the operating and emergency
procedures.
True or false, radiation can be both ionizing or non-ionizing? - ✔✔ANSWER✔✔>>Truw
Are the following ionizing or non-ionizing? Radio waves, microwaves, infrared waves,
visible light? - ✔✔ANSWER✔✔>>Non-ionizing (which lacks energy to alter material)
True or false: X-rays and gamma rays are types of ionizing radiation? -
✔✔ANSWER✔✔>>True (it is ionizing radiation either from primary or secondary
sources, as well as alpha and beta particles)
What is ionization? - ✔✔ANSWER✔✔>>Process of removing an electron from an atom
What are the three most common interactions of X-rays and gamma rays as they pass
through matter? - ✔✔ANSWER✔✔>>Photoelectric effect
Compton effect
, Pair production
Photoelectric effect refers to? - ✔✔ANSWER✔✔>>complete absorption of a photon
Compton effect refers to? - ✔✔ANSWER✔✔>>Part of a photon being absorbed while
the rest is scattered
Radiation coming from the wall or floor that is behind an object being radiographed
would be known as? - ✔✔ANSWER✔✔>>BACK SCATTER
What are the four types of devices required for use by the radiographer and assistant? -
✔✔ANSWER✔✔>>Survey meter
Alarming rate meters
Direct reading/pocket dosimeter
Personnel dosimeter
What does a survey meter measure? - ✔✔ANSWER✔✔>>Immediate dose or exposure
rates and determine the presence of ionizing radiation.
True or false: most industrial radiographers use a Geiger-muller type meter? -
✔✔ANSWER✔✔>>True
What is first thing to do when reading a survey meter? - ✔✔ANSWER✔✔>>Check
batteries
Then check calibration
examples of electromagnetic radiation? - ✔✔ANSWER✔✔>>X-rays, unltraviolet and
Infrared light, microwaves, radio waves
What makes X-rays and gamma rays different from other electromagnetic radiation? -
✔✔ANSWER✔✔>>Their energy level is high enough to penetrate matter
As wavelengths of xray and gamma ray increase, does the penetrating ability increase
or decrease? - ✔✔ANSWER✔✔>>Decrease.
How are gamma rays produced? - ✔✔ANSWER✔✔>>When an unstable atom converts
to a stable atom
An elements atomic weight is also known as the: - ✔✔ANSWER✔✔>>A number of
What happens as a radioactive isotope (radioisotope) decays? -
✔✔ANSWER✔✔>>Atom changes from unstable to stable state - resulting in emission
of radiation
