a convex lens of an optical instrument needs to form an inverted image that is 4 times smaller than the object. how far from the lens should the object be placed?
Answer: behind the double focal point. can someone explain this to me please?
i have a similar question. A CONCAVE lens of an optical instrument needs to form an inverted image that is 4 times smaller than the object. how far from the lens should the object be placed?
Answer: this image will never be formed regardless of the placement of the object. why?