About the properties of the image of magnifying glass

2008-03-22 5:34 am
If the distance between the magnifying glass and the object is long(20cm), will the image be magnify/diminish, erect/inverted?



If the distance between the magnifying glass and the object is short(5cm), will the image be magnify/diminish, erect/inverted?

回答 (1)

2008-03-22 6:51 am
✔ 最佳答案
since you do not tell the focal length of the glass.
we assume it is more than 5cm and less than 20cm.
in the first case, the image will be inverted. but you don't tell
the focal length. the image is magnified if the object is
between f and 2f. the image is equal to the object if the object is
in 2f. the image is diminished if the object is beyond 2f.
in the second case, the image is magnified and erect.


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