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40 hr radiation safety ALL QUESTIONS IN
BOOK EXAM Questions and Correct
Answers
In the early years of radiography what caused personnel to be
exposed? Ans: All the above
In what year did Marie Curie die? Ans: late in 1898
Who coined the term radioactivity? Ans: Marie and Pierre Curie
In the early years of radiography from 1920-1930, the maximum
thickness that could be inspected via
X-radiation was of steel? Ans: 3 in ( 7.62 )
Historically, it has been proven the predominant cause of
overexposure is Ans: All the above
The responsibility to adhere to the regulations, license conditions
and company policies falls to: Ans: All radiation workers
Alpha particles were discovered by Ans: Ernest Rutherford
The first medical X-Ray was conducted at Ans: Massachusetts
General
© 2025 All rights reserved
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Regulations from one state to the next are essentially the same?
Ans: True
The origins of industrial radiography can be attributed to: Ans:
Wilhem Rontgen
A radiographer has several avenues to seek guidance and counsel.
The first person he should turn to is? Ans: The RSO
The two basic types of radiation are? Ans: particulate and
electromagnetic
Wavelike radiation travels at: Ans: at the speed of light without
regard to pressure, temperature or magnetic fields
Gamma rays travel in a wavelike motion at the speed of? Ans:
186,000 miles/s
Matter can be turned into energy? Ans: True
Alpha particles are much like helium nucleus as they have? Ans: 2
protons and 2 neutrons
Alpha particles have a/an Ans: Positive charge
Beta particles have a/an Ans: negative charge
Beta particles have a mass: Ans: much less than that of an alpha
particle
© 2025 All rights reserved
40 hr radiation safety ALL QUESTIONS IN
BOOK EXAM Questions and Correct
Answers
In the early years of radiography what caused personnel to be
exposed? Ans: All the above
In what year did Marie Curie die? Ans: late in 1898
Who coined the term radioactivity? Ans: Marie and Pierre Curie
In the early years of radiography from 1920-1930, the maximum
thickness that could be inspected via
X-radiation was of steel? Ans: 3 in ( 7.62 )
Historically, it has been proven the predominant cause of
overexposure is Ans: All the above
The responsibility to adhere to the regulations, license conditions
and company policies falls to: Ans: All radiation workers
Alpha particles were discovered by Ans: Ernest Rutherford
The first medical X-Ray was conducted at Ans: Massachusetts
General
© 2025 All rights reserved
, 2 | Page
Regulations from one state to the next are essentially the same?
Ans: True
The origins of industrial radiography can be attributed to: Ans:
Wilhem Rontgen
A radiographer has several avenues to seek guidance and counsel.
The first person he should turn to is? Ans: The RSO
The two basic types of radiation are? Ans: particulate and
electromagnetic
Wavelike radiation travels at: Ans: at the speed of light without
regard to pressure, temperature or magnetic fields
Gamma rays travel in a wavelike motion at the speed of? Ans:
186,000 miles/s
Matter can be turned into energy? Ans: True
Alpha particles are much like helium nucleus as they have? Ans: 2
protons and 2 neutrons
Alpha particles have a/an Ans: Positive charge
Beta particles have a/an Ans: negative charge
Beta particles have a mass: Ans: much less than that of an alpha
particle
© 2025 All rights reserved
