Use the lens formula to find where a convex lens with a 5cm focal length will form an image for an object that 15cm away?
- Old Science GuyLv 711 months agoFavourite answer
1/f = 1/di + 1/do
convex glass lens in air is a converging lens so f is positive
1/5 = 1/di + 1/15
1/di = 1/5 - 1/15 = 2/15 = 1/ 7.5
di = 7.5 cm
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