Rad135 Ch2 Radiation Concepts Question Preview (ID: 55284)


This Content Covers Chapter 2 (Radiation Concepts) From The Text To Help You Prepare For The Midterm Exam In Rad135. TEACHERS: click here for quick copy question ID numbers.

Which of the following happens to the amount of electrons that are able to cross the tube when the mA doubles?
a) cut in half
b) doubles
c) quadruples due to the inverse square law
d) depends on the kV

Aluminum has an atomic number of 13.  How many protons does it have?
a) 13
b) 26
c) depends on how many electrons are present
d) none of the above

What is the orbital shell that is closest to the nucleus?
a) A shell
b) E shell
c) K shell
d) O shell

A moving object has ____ energy.
a) electrostatic
b) kinetic
c) potential
d) electromotive

All of the following are energy forms except:
a) thermal
b) electrical
c) audio
d) nuclear

An atom in a stable state has an electrical charge of:
a) plus eight
b) negative
c) positive
d) neutral

What is the velocity of a 72 keV photon?
a) 3 x 10^8 m/sec
b) 3 x 10^6 km/sec
c) 72,000 m/s
d) none of the above

What is the wavelength of an x-ray with a frequency of 1.72 x 10^17 Hz?
a) 5.73 x 109m
b) 1.74 nm
c) 5.73 nm
d) none of the above

A term used for both protons and neutrons is:
a) atomic number
b) nucleons
c) quarks
d) atoms

Almost all of the kinetic energy of the incident electrons is converted to: ____.
a) light
b) heat
c) x-ray photons
d) kinetic energy

What is the unit of measure for x-ray quantity (exposure)?
a) radiation absorbed dose (rad)
b) Roentgen (R)
c) radiation equivalent man (rem)
d) gray

How are frequency and wavelength related?
a) As frequency increases, wavelength increases
b) They are directly related
c) As one increases, the other decreases
d) They have no effect on eachother

What is the outcome of Einstein's work?
a) string theory
b) law of conservation
c) wave theory
d) particle theory

What is the relationship between subatomic particles in a neutral (stable) atom?
a) The number of protons and neutrons is equal
b) The number of protons and electrons is equal
c) The number of nucleons and electrons is equal
d) The mass of protons and electrons is equal

According to the octet rule,  ____.
a) only eight energy levels can have electrons
b) the outermost electron shell of an atom can hold 2n^3 electrons
c) the outermost electron shell of an atom can hold a maximum of eight electrons
d) an atom with eight electrons always has a negative charge

What is considered to be the energy of motion?
a) potential energy
b) kinetic energy
c) nuclear energy
d) chemical energy

What is the result of the movement of electrons in a conductor?
a) electrical energy
b) chemical energy
c) mechanical energy
d) nuclear energy

What is the process of adding or removing an electron from an atom?
a) atomization
b) ionization
c) fusion
d) electrification

What is the term for the quantity of matter contained in an object?
a) weight
b) matter
c) space
d) mass

What is the smallest subdivision of an element that still retains the characteristics of that element?
a) atom
b) proton
c) neutron
d) molecule

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