What are photons?
A. electrons
B. Tiny quantized packets of light.
C. protons
D. name of a rock group
E. neutrons - Answers B. Tiny Quantized Packets of light.
What happens in the photoelectric effect?
A. Electrons hit a metal and electrons are emitted.
B. Light hits a metal and photons are emitted.
C. Electrons hit a metal and light is emitted.
D. Light hits a metal and protons are emitted.
E. Light hits a metal and electrons are emitted. - Answers Lights Hit metal and Electrons are
emitted.
What should the digital multimeter be set to read?
A. power
B. impedance
C. current
D. voltage
E. resistance - Answers Voltage
Which of the following DOES NOT describe projection imaging?
A. Images are formed by projecting a beam through the patient's body and casting shadows
onto an appropriate receptor
B. Spatial distortion is generally not a major problem
C. Produces images of selected planes or slices of tissue of the patient's body
D. A large volume of the patient's body can be viewed with one image
, E. All of the above describe projection imaging. - Answers C. Produces Images of selected
planes or slices of tissues of the patient's body.
Which of the following DOES NOT describe tomographic imaging?
A. A large volume of the patient's body can be viewed with one image
B. Produces images of selected planes or slices of tissue of the patient's body
C. Includes PET and MRI scans
D. Increased visibility of objects within the imaged plane due to absence of overlying objects
E. All of the above describes tomographic imaging - Answers Large volumes of patients body
viewed with one image.
An ordinary dental X-ray uses which imaging technique(s)?
A. Sonography
B. Projection
C. Tomography
D. None of the above - Answers Projection
Which of the following is NOT a requirement for a suitable probe beam?
A. It interacts with the sample to produce useful information
B. It can penetrate the body
C. Harmful, unwanted interactions with the body are minimal
D. It interacts with a large number of cells
E. All of the above are requirements for a suitable probe beam - Answers It interacts with a
large number of cells.
Some wave energy can penetrate and pass through a sample. This is a description of what type
of interaction with matter?
A. Transmission
B. Absorption
C. Reflection
D. Incidence - Answers Transmission