What is the magnification of an image taken at 72 inch SID and 8 inch OID?

Which of the following pieces of equipment is composed of increasing thick, uniform absorbers made of aluminum or plastic that produces optical densities on a radiographic film by exposure to x-rays?

Choose three (3) factors that are responsible for the base plus fog on a radiographic film:

Which of the following best explains why infiltration techniques are highly successful in the maxilla?

Given 25 mAs and a milliamperage of 100, calculate the exposure time.

In a PA projection of the chest being used for cardiac evaluation, the heart measures 15.2 cm on the radiographic image.  If the magnification factor is known to be 1.3, what is the actual diameter of the heart?

Which of the following changes will NOT affect magnification?

Which of the following describes the relationship between changes in SID and maintaining radiographic density?

A 3 inch object to be radiographed at a 36 inch SID lies 4 inches from the image receptor.  What will be the image size?

A film transmits 25% of the incident light.  What is the optical density?