Radiation and its discovery
Ans:
B
2. In what year were some of the biologically damaging effects of x-rays discovered?
a) 1892
b) 1895
c) 1898
d) 1901
Ans:
C
3. X-rays were discovered in experiments dealing with electricity and ___________.
a) Ionization
b) Magnetism
c) Atomic structure
d) Vacuum tubes
Ans:
D
4. X-rays were discovered when they caused a barium platinocyanide-coated plate to _________.
a) Fluoresce
b) Phosphoresce
c) Vibrate
d) Burn and redden
Ans:
A
5. X-radiation is classified in which spectrum?
a) Radiation
b) Energy
c) Atomic
d) Electromagnetic
Ans:
D
6. X-rays have a dual nature, which means that they behave like both ________________.
a) Atoms and molecules
b) Photons and quanta
c) Waves and particles
d) Charged and uncharged particles
Ans:
C
7. The wavelength and frequency of x-rays are __________________ related.
a) Directly
b) Inversely
c) Partially
d) Not
Ans:
B
8. X-rays have __________________ electrical charge.
a) A
positive
b) A
negative
c) An
alternately positive and negative
d) No
Ans:
D
9. X-rays have ____________.
a) No
mass
b) The
same mass as electrons
c) The
same mass as protons
d) The
same mass as neutrons
Ans:
A
10. The x-ray beam used in diagnostic radiography can
be described as being ___________.
a) Homogeneous
b) Monoenergetic
c) Polyenergetic
d) Scattered
Ans:
C
11. The unit that measures the transfer of radiation
energy into tissues is known as the ___________.
a) Roentgen
b) Rem
c) Gray
d) Sievert
Ans:
C
12. Which of the following will minimize radiation
exposure to the patient?
a) Beam
restriction
b) Gonadal
shielding
c) Screening
for pregnancy
d) All
of the above
Ans:
D