Which of the following situations regarding source-to-image distance (SID) is correct as it relates to size distortion?

If the small filament is heated, which size focal spot would be produced?

Which of the following will produce the largest image?

If filter thickness is ________, then x-ray intensity is ________.

A technique of 10 mAs at 78 kVp is used at a 140 cm (56”) SID. What new SID should be used to decrease the exposure to 5 mAs at 78 kVp?

Assume that the usual exposure time for an AP lumbar spine is 3/4 second at 40 inches.  If you needed to use a shorter time of 3/10 second due to the condition of the patient, all other factors constant, the correct SID is:

Extremely low mAs could result in all of the following except:

Utilizing an x-ray tube with a large anode angle compared to a tube with a small angle and the same size actual focal spot results in:

Focal spot blur can be reduced by using __________.

Which of the chest radiographs would probably have the highest contrast?