1.focal distance 77.18 cm,distance object 120cm .What`s the distance image ? What`s the magnification?
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1.focal distance 77.18 cm,distance object 120cm .What`s the distance image ?

What`s the magnification?


2.Focal distance 77.18 cm distance object 90cm what`s the distance image.What`s the magnification
3.Focal distance 77.18 cm distance object 60cm .what`s the distance image.What`s the magnification


4Focal distance 77.18 cm distance object 30cm what`s the distance image.What`s the distance magnification


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