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Do Concave Mirrors Always Form Real Images?

  1. Jul 17, 2017 #1
    i want to know the concave mirros is always real images or any difference then how to calculate

    thanks and regards
  2. jcsd
  3. Jul 17, 2017 #2


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    No, if the object is closer to the mirror than the focal point, the image formed is virtual.
  4. Jul 17, 2017 #3


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    Makeup and shaving mirrors are (slightly) concave and form an 'erect', virtual image. Retreat to the centre of curvature and the image swells up, gets distorted and then flips to a real, 'inverted' image. Put your eye very close to the bowl of a spoon and you get a virtual image but the radius of curvature is so small that it can be difficult to see it well; the image that you see is usually real because of the size of the spoon. You can tel this because you can put your finger right next to it. Have a play and prove it all.
    Then look at this link.
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