Question

The linear magnification of a convex lens is -1, when object in front of the lens is​

Answer 1

Answer:

so the image is also formed in the front of lens . As the lens given is convex lens . as v and u are same but v is negative. height of image is in negative also height of object in positive.

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Answer 2

Answer:

a 2f

between f1 and f2

at focus

at infinite