8.
The characteristic x-ray is produced as a result of the impinging electron:
a.
Slowing down near the target nucleus.
b.
Knocking an electron from orbit in the target atom.
c.
Striking the target nucleus.
d.
Accelerating near the target nucleus.
9.
The x-ray beam may be "hardened" by using:
a.
Filtration.
b.
Higher current.
c.
Different target.
d.
Larger target.
10.
The amount of material required to reduce the exposure rate from an x-ray beam
by one-half is the:
a.
Doubling layer.
b.
c.
Half-value layer.
d.
Half layer.
11.
The first protection standard was based on:
a.
An amount of radiation necessary to cause nausea.
b.
An amount of radiation necessary to cause a skin erythema.
c.
An amount of radiation necessary to darken a photographic film.
d.
An amount of radiation necessary to saturate an ion chamber.
MD0180
2-19