How many places can you put the lens to form a well-focused image of the candle flame on the wall?

Question:

A 2.0-cm-tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 32 cm. How many places can you put the lens to form a well-focused image of the candle flame on the wall? For each location, what are the height and orientation of the image?

Answer Is As Explain in Below Image:

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