Question

In which points the object should be
kept infront of the convex lens to have
manification 1
​

Answer 1

If the lens has a focal length of 20 cm, the object must be positioned 40 cm in front of the lens, creating an inverted image of the same size as the target, 40 cm behind the lens. Magnification is -1 and hence the image size is same as object size.

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Answer 2

Explanation:

If the lens has a focal length of 20 cm, the object must be positioned 40 cm in front of the lens, creating an inverted image of the same size as the target, 40 cm behind the lens. Magnification is -1 and hence the image size is same as object size