Question

an object is located 25.5 cmcm from a certain lens. the lens forms a real image that is twice as high as the object. part a what is the focal length of this lens?

Answer 1

Answer: 17.0

Explanation: Magnification = the height of the image ÷ by the height of the object

Magnification = (focal length)/(focal length - cross' distance from the lens)