ASNT Radiographic Testing Practice Test 2025 – Comprehensive All-in-One Guide for Exam Success!

Question: 1 / 400

In terms of intensity, what does the term R/h refer to?

Radios per hour

Roentgens per hour

The term R/h refers to "Roentgens per hour," which is a measure of the intensity of ionizing radiation exposure. The Roentgen (R) is a unit that quantifies the amount of X or gamma radiation that produces a certain amount of ionization in air. When expressed as R/h, it indicates how many Roentgens of radiation exposure occur in one hour, allowing for the assessment of the radiation levels to which individuals may be exposed over a specific period.

Understanding this unit is particularly important in fields such as radiographic testing and other applications involving radiation, as it helps in monitoring and controlling exposure to ensure safety standards are met for workers and the environment. The other options refer to various concepts or other units of measurement that are not commonly associated with the same specific meaning as R/h.

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Radiation units per hour

Radon per hour

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