Which of the following methods does NOT help in protecting against radiation exposure?

Increasing exposure time does not aid in protecting against radiation exposure; in fact, it has the opposite effect. The principle of radiation safety emphasizes minimizing exposure to ionizing radiation to reduce the risk of harm. When the time of exposure to radiation increases, the radiation dose received by a person also increases, thereby heightening the risk of potential radiation-related effects.

On the other hand, using distance is an effective method of protection because radiation intensity decreases significantly with an increase in distance from the source, following the inverse square law. Wearing protective equipment, such as lead aprons or shields, reduces the amount of radiation that penetrates to the body, providing an important layer of protection. Lastly, utilizing shielding—material that absorbs or blocks radiation—also effectively reduces exposure levels.