Question

what is the relationship between the image distance and object distance​

Answer 1

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$\frac{1}{f} = \frac{1}{v } - \frac{1}{u}$

Answer 2

Answer ⬇️

Relationship between image distance and object distance

Starting from a large value, as the object distance decreases (i.e., the object is moved closer to the lens), the image distance increases; meanwhile, the image height increases. ... Finally, when the object distance is equal to exactly one focal length, there is no image.