Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

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Text of Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

  • Physics 014Images

  • TopicsPlane mirrorsSpherical mirrorsThin lenses

  • Plane MirrorsA virtual image CANNOT be seen on a screenA real image CAN be seen on a screen

  • Plane Mirrors

  • Plane Mirrors

  • Plane MirrorsO is a point source of lightIncident beams from O reflect off plane mirrorBeams reflect at angles consistent with law of reflectionExtend reflections to I, the virtual point image

  • Plane Mirrors

  • Plane MirrorsFor the plane mirror,

    i=-p

    i is the image distance, p is the object distance

  • Plane Mirrors

  • Plane MirrorsFor extended objectsDraw ray from base Draw several rays from tipWhere ray extension from tip converge is tip image point

  • Spherical MirrorsTwo types of spherical mirrorsConcave mirror: light rays converge on real focusConvex mirror: light rays diverge from virtual focus

  • Spherical Mirrors

  • Concave mirrors: Increase image sizeMove image farther awayReduce field of viewSpherical Mirrors

  • Convex mirrors: Decrease image sizeMove image closerIncrease field of viewSpherical Mirrors

  • Spherical MirrorsWe can find an expression relating the distances f, p, and i

  • Spherical MirrorsHow do I find the image using rays?

  • Spherical Mirrors

  • Spherical Mirrors

  • Spherical MirrorsExtend rays from tip and base of object to determine image location and orientation

  • Spherical MirrorsParallel ray reflected through focal pointRay through focal point reflected parallelRay through centerRay reflected symmetrically from c

  • Thin LensesTwo types of lensesConverging lenses cause rays to converge on focal pointDiverging lenses cause rays to diverge from focal point

  • Thin Lenses

  • Thin Lenses

  • Thin LensesWe may use the same equation we used for mirrors to relate i, p, and fThis is not the lens makers equation!

  • Thin Lenses

  • Thin LensesRay initially parallel converge on focal pointRay initially through focal point emerges parallelRay through center emerges unchanged

  • Thin Lenses

  • Thin Lenses

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