couple questions on lenses

[OneManShow]

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1. If magnification is less than 1, does that mean the image is reduced? (and if it's greater than 1 is it enlarged?

2.If magnification is greater than 0, does it mean the image is upright? (and if it's less than 0 it is inverted?

3. Is it true that diverging lenses always form upright virtual images whereas converging lenses always form inverted real images?

I believe the answer is yes to all of these but I'm not sure 100 %

 

[NECHES28]

OneManShow,

Many of the rules that apply to mirrors also apply to lenses, with a few exceptions. The exceptions will not be listed.

If the m is less than 1, the image will be reduced and if m is greater than 1 the image will be enlarged. If m is equal to 1, then the image and the object will be the same size.

When m is negative, the image will be inverted and when m is positive, the image will be upright or erect.

Yes, diverging lenses form virtual, upright or erect images. However, for converging lenses it depends on the where the object lies in relation to the focal point. If the object is within the focal point a virtual, upright or erect image is formed. If the object is outside of the focal point, a real, inverted image is formed. No image is formed if the object appears at the focal point.

 

[OneManShow]

thanks!