Texas Registered Sanitarian Practice Exam 2025 - Free Sanitarian Practice Questions and Study Guide

Question: 1 / 400

The absorption of how many ergs of air represents 1 roentgen?

~100

~86

One roentgen is a unit of measurement used to quantify exposure to ionizing radiation, specifically in air. It defines the amount of gamma or X-rays that can produce a certain amount of ionization within a specified volume of air. The correct answer of approximately 86 ergs of air aligns with established scientific standards. This value is crucial for understanding radiation measurement because it reflects the energy deposited by radiation, which is important for assessing risks and implementing safety measures in environments where radiation exposure is a factor.

In this context, while the other values represent different digits of energy, they do not accurately relate to the conversion from roentgens to ergs in air, which is specifically determined to be about 86. Understanding this relationship is vital for professionals in the field, as it aids in the assessment and management of radiation exposure risks.

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~75

~50

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