What is the primary purpose of film in radiographic testing?

The primary purpose of film in radiographic testing is to capture images produced by radiation exposure. This process occurs when the film is exposed to radiation emitted from the object being tested. The radiation interacts with the film, creating a latent image that later becomes visible when the film is developed. The captured image reflects the internal structure and any potential flaws within the material, allowing for analysis and evaluation.

While other choices mention concepts related to radiographic testing, they do not accurately describe the film's role. Blocking radiation or enhancing the observation of defects might involve other materials or techniques, but the film's key function is to record the results of the radiation exposure. Similarly, converting radiation into sound waves pertains to different testing methods, such as ultrasonic testing, which do not involve traditional film-based radiography. This distinction clarifies why capturing images is fundamental to the film's purpose in the context of radiographic testing.