What effect does increasing distance from a radiation source have on exposure?

Increasing distance from a radiation source significantly decreases exposure due to the inverse square law, which states that the intensity of radiation decreases as the distance from the source increases. This law demonstrates that if you double the distance from the source, the exposure is reduced to one-fourth, and if you triple the distance, the exposure becomes one-ninth.

As distance increases, the geometric spread of radiation results in fewer rays reaching a specific point, thereby reducing the amount of radiation that a person or object is subjected to. This principle is fundamental in radiation safety practices, guiding protocols for minimizing exposure risk by maximizing distance from known sources of radiation.

The other options do not reflect the physical principles governing radiation exposure and its dependence on distance; thus, they do not accurately describe the relationship between distance and exposure levels.