Radiology Question: Which of the following is MOST radioapaque?a. amalgamb. porcelainc. composited. acrylic? Radiology Interview QuestionAnswer: a. amalgam Previous QuestionNext QuestionA diagnostic film is produced using 10 mA and .5 second. What exposure time is needed to produce the same film at 20 mA?When viewed on a light source, a dental radiograph that demonstrates many shades of gray is said to have:a. high contrastb. low contrastc. high densityd. low density