INBDE (Integrated National Board Dental Examination) Practice Exam

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Emulsion layer on film is made of what?

Silver nitrate
Silver bromide crystals that are sensitive to light
Photographic gelatin
Chloride crystals

The correct answer is: Silver bromide crystals that are sensitive to light

The emulsion layer on film is made of silver bromide crystals that are sensitive to light. This layer is responsible for capturing the image during photography. Option A, silver nitrate, is typically used to sensitize the silver bromide crystals and therefore is not the primary component of the emulsion layer. Option C, photographic gelatin, is used to hold the silver bromide crystals in place but is not the component that is sensitive to light, making it an incorrect choice. Option D is similar to option A in that chloride crystals are also used to sensitize the silver bromide crystals, but they are not the primary component of the emulsion layer. Therefore, option B is the most accurate and complete answer.