Dosimetry II Exam 2 and 3 Actual
Questions and Answers 2026
These are the only subatomic particles that can carry a partial
charge: -
correct answer ✅Quark
What type of machine was the first used for multiple field
techniques? -
correct answer ✅orthovoltage
Which particle has the strongest net charge? -
correct answer ✅electron and proton
What was the first type of cancer to be cured using x-rays? -
correct answer ✅buccal mucosa
What type of cancer was the first to be treated using x-rays? -
correct answer ✅gastric
How many known elements are there? -
correct answer ✅118
1 amu is equal to how much energy? -
correct answer ✅
,Dosimetry II Exam 2 and 3 Actual
Questions and Answers 2026
Which of the following is smallest?
a. Quark
b. lepton
c. meson
d. baryon -
correct answer ✅lepton
About how far across (in diameter) is an atom? -
correct answer ✅1-2 Å
The nucleus of an atom is held together by what type of force? -
correct answer ✅strong interaction
This "particle" may have no mass and is sometimes called a "ghost
particle": -
correct answer ✅neutrino
,Dosimetry II Exam 2 and 3 Actual
Questions and Answers 2026
Electrons responsible for chemical reactions and bonds between
atoms are called what type of electrons? -
correct answer ✅
What type of cancer was first treated using a multiple field
technique? -
correct answer ✅breast
The tube that was used when x-rays were first discovered was
called a ___________ tube. -
correct answer ✅crookes
T / F Electrons can exist free in nature. -
correct answer ✅True
The mass of a proton is: -
correct answer ✅1836
The number of vibrations a wave will make in one second defines: -
correct answer ✅frequency
, Dosimetry II Exam 2 and 3 Actual
Questions and Answers 2026
What does the "Z" number tell us (the number of what)? -
correct answer ✅protons in the atom
The state of matter in which there is a constant volume but an
indefinite shape describes: -
correct answer ✅liquid
T / F Most early radiation treatments were given using
brachytherapy vs. external beam treatment. -
correct answer ✅True
The nucleus of an atom: -
correct answer ✅contains a positive charge
One a.m.u. equals 1/12 the mass of a __________ atom. -
correct answer ✅carbon
The resting mass of an electron is equal to what energy? -
correct answer ✅511 KV
T / F Each orbit (electron shell) has an associated energy level. -
correct answer ✅True
Questions and Answers 2026
These are the only subatomic particles that can carry a partial
charge: -
correct answer ✅Quark
What type of machine was the first used for multiple field
techniques? -
correct answer ✅orthovoltage
Which particle has the strongest net charge? -
correct answer ✅electron and proton
What was the first type of cancer to be cured using x-rays? -
correct answer ✅buccal mucosa
What type of cancer was the first to be treated using x-rays? -
correct answer ✅gastric
How many known elements are there? -
correct answer ✅118
1 amu is equal to how much energy? -
correct answer ✅
,Dosimetry II Exam 2 and 3 Actual
Questions and Answers 2026
Which of the following is smallest?
a. Quark
b. lepton
c. meson
d. baryon -
correct answer ✅lepton
About how far across (in diameter) is an atom? -
correct answer ✅1-2 Å
The nucleus of an atom is held together by what type of force? -
correct answer ✅strong interaction
This "particle" may have no mass and is sometimes called a "ghost
particle": -
correct answer ✅neutrino
,Dosimetry II Exam 2 and 3 Actual
Questions and Answers 2026
Electrons responsible for chemical reactions and bonds between
atoms are called what type of electrons? -
correct answer ✅
What type of cancer was first treated using a multiple field
technique? -
correct answer ✅breast
The tube that was used when x-rays were first discovered was
called a ___________ tube. -
correct answer ✅crookes
T / F Electrons can exist free in nature. -
correct answer ✅True
The mass of a proton is: -
correct answer ✅1836
The number of vibrations a wave will make in one second defines: -
correct answer ✅frequency
, Dosimetry II Exam 2 and 3 Actual
Questions and Answers 2026
What does the "Z" number tell us (the number of what)? -
correct answer ✅protons in the atom
The state of matter in which there is a constant volume but an
indefinite shape describes: -
correct answer ✅liquid
T / F Most early radiation treatments were given using
brachytherapy vs. external beam treatment. -
correct answer ✅True
The nucleus of an atom: -
correct answer ✅contains a positive charge
One a.m.u. equals 1/12 the mass of a __________ atom. -
correct answer ✅carbon
The resting mass of an electron is equal to what energy? -
correct answer ✅511 KV
T / F Each orbit (electron shell) has an associated energy level. -
correct answer ✅True
