Using the formula 1/f = 1/object distance + 1/image distance,(adsbygoogle = window.adsbygoogle || []).push({});

in the instance where you have two plano-convex lenses glued together on their flat sides, what does it mean if your image distance from the first lens is negative? is the image in front of the second lens or behind the second lens?

This is not a homework problem!!!

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# Using the formula 1/f = 1/object distance + 1/image distance, in the

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