ASNT Radiographic Testing Practice Test 2026 – Comprehensive All-in-One Guide for Exam Success!

Question: 1 / 400

Which metal is responsible for forming the image on an x-ray film?

Gold

Iron

Lead

Silver

The metal that is responsible for forming the image on x-ray film is silver. When x-ray film is exposed to radiation, the silver halide crystals present in the emulsion layer of the film undergo a chemical change. The areas of the film that are exposed to more radiation become darkened when developed, as the reduced silver ions turn into metallic silver. This process results in the formation of a latent image that becomes visible after development. Silver is crucial to this process due to its sensitivity to light and ability to create a high-contrast image.

In contrast, gold, iron, and lead do not play a role in the development of x-ray film. Gold is not typically used in x-ray imaging due to its properties and cost. Iron does not contribute to film exposure or development, while lead is primarily used for radiation shielding to protect personnel from scattered x-rays rather than for forming images on x-ray film.

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