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Magnifying Lens?
How far from a 35.0 cm focal length lens should you put an object to get an upright image magnified by a factor of 1.72?
1 Answer
- Andrew SmithLv 74 years agoFavorite Answer
Look at that other answer I gave you
You know that |hi/ho| =| di/do| = 1.72 / 1
Sound familiar?
Bu remember for a virtual image the image is on the OPPOSITE side of the lens
Hence di = - 1.72 do
Again we have di, do and f so we would use 1/f = 1/ do + 1/di
= 1/ do + 1/ ( - 1.72 do) = (1 -1.72) / ( - 1.72 do)
-> f = -1.72 do/(1 - 1.72)
Can you take it from here?
