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Confused about image size in plane, concave, or convex mirrors

  1. Jun 20, 2012 #1
    So I know these equations

    1/f = 1/p + 1/i
    m = -i/p

    f: focal length
    p: object distance from mirror
    i: image distance from mirror
    m: magnification

    Let's say that I have an object in front of a concave or convex mirror with the same |f|. p is much larger than the radius of curvature. Based on the equations above, |m|<1. Also, |m| should be nearly same for both mirrors. Does this mean that the images produced by the two mirrors would appear to be about the same size?

    Also, if I replace the concave or convex mirror with a plane mirror (while keeping p the same), |m| would be 1 for the image. Does this mean that the image produced by the plane mirror would appear to be larger than the image produced by the concave/convex mirrors?

    (I tried to check this using a spoon, but the spoons I have are not very reflective...)
  2. jcsd
  3. Jun 20, 2012 #2
    Yes to all.
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