Which of the following is a factor of radiation exposure?

Distance is a critical factor in radiation exposure because it significantly influences the amount of radiation that a person receives. The intensity of radiation follows the inverse square law, meaning that as the distance from the radiation source increases, the exposure decreases exponentially. This principle applies to various types of radiation, including electromagnetic radiation and particulate radiation, emphasizing the importance of maintaining a safe distance from sources of radiation to minimize exposure levels.

While frequency can describe the type of radiation and its energy, it does not directly impact the level of exposure like distance does. Altitude can play a role in exposure due to increased cosmic radiation at higher elevations, but distance remains a more direct and effective means of reducing exposure. Weather conditions may affect radiation in specific contexts but are not generally considered a primary factor in overall radiation exposure.