Magnification & power 0.0 / 5 ? PhysicsMedical PhysicsGCSEAQA Created by: EllieCreated on: 23-04-14 16:14 For a virtual image to work the image has to be closer to the lens than the focal length 1 of 11 What can't virtual images do? displayed on a screen 2 of 11 Magnification = image height / ....... object height 3 of 11 focal length is related to the... power 4 of 11 P= 1/f : What does P stand for? Power 5 of 11 P= 1/f : What does F stand for? focal length 6 of 11 What is power measured in? dioptres 7 of 11 What is Focal length measured in? Metres 8 of 11 Positive power comes from a ...................... lens? Converging 9 of 11 Negative power comes from a ...................... lens? diverging 10 of 11 the focal length is determined by ... and .... refractive index and curve of lens 11 of 11
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