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Target: construct a ray diagram for lenses. Ray Diagrams. First ray Second ray. Optical centre. Principal focus or focal point. Principal axis. Focal length, f. Object distance, d o. Image distance, d i. Target: calculate values from a ray diagram. Useful Formulae. Descartes’ Formula.
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Target: construct a ray diagram for lenses Ray Diagrams First ray Second ray Optical centre Principal focus or focal point Principal axis Focal length, f Object distance, do Image distance, di
Target: calculate values from a ray diagram Useful Formulae Descartes’ Formula Magnification Newton’s Formula f = focal length di = distance from image to lens do= distance from object to lens m = magnification Hi= height of image Ho = height of object di = distance from image to lens do = distance from object to lens f = focal length Si= distance from image to focal point So= distance from object to focal point