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23 Nov 2019
You have two lenses at your disposal, one with a focal length f1=35.0 cm , the other with a focal length f2=-35.0cm .Which of these two lenses would you use to project an image of a lightbulb onto a wall that is far away?If you want to produce an image of the bulb that is enlarged by a factor of 2.50, how far from the wall should the lens be placed?
You have two lenses at your disposal, one with a focal length f1=35.0 cm , the other with a focal length f2=-35.0cm .Which of these two lenses would you use to project an image of a lightbulb onto a wall that is far away?If you want to produce an image of the bulb that is enlarged by a factor of 2.50, how far from the wall should the lens be placed?