When radiographing to the 2-2T quality level, an ASTM penetrameter for 13 mm (0.5 in.) thick 2024 aluminum alloy has a thickness of:

Which dose would be dangerous, if not fatal, if applied to the entire body in a short period of time?

If a piece of lead 13 mm (0.5 in.) thick is placed in the path of a beam of radiation emanating from Co-60, it will reduce the dose rate at a given location by:

If an exposure time of 60 seconds was necessary using a 1.2 m (4 ft) source-to-film distance for a particular exposure, what time would be necessary if a 0.6 m (2 ft) source-to-film distance is used and all other variables remain the same?

A fluorescent intensifying screen will:

The purpose of fixation is:

Water spots on films can be minimized by:

Assuming that a good radiograph is obtained at a setting of 10 mA in 40 s, how much time will be necessary to obtain one equivalent radiograph if the milliamperage is changed to 5 mA (all other conditions remaining constant)?

When referring to a “2T” or “4T” hole in the ASTM penetrameter, the T refers to the:

A properly exposed radiograph that is developed in a developer solution at a temperature of 14ºC (58ºF) for 5 minutes will probably be:

Why is Co-60 used as a radiation source for medium-weight metals of thickness ranges from 38 to 229 mm (1.5 to 9 in.)?

During manual film processing, the purpose of the stop bath is to :

The two most commonly used shielding materials are:

An excellent radiograph is obtained under given conditions of exposure with the film located at a distance of 91 cm (36 in.) from the target of the X-ray tube. If the film is now placed only 46 cm (18 in.) from the target, and all exposure conditions except time are held constant, the new exposure time will be:

Processing tanks should be thoroughly cleaned every time the solutions are changed.

Radiographic sensitivity, in the context of the minimum detectable flaw size, depends on :

Static marks, which are black tree-like or circular marks on a radiograph, are often caused by:

Unexposed boxes of X-ray film should be stored:

In making an isotope exposure in an unshielded area, you find the dose rate 1.8 m (6 ft.) from the source is 1 200 mR/h. What would be the dose rate at 7.3 m (24 ft.)?

Penetrameters for ____________ are considered Group I Materials and do not need to have an identification notch