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Optical Magnetic Reader(omr)

  1. May 8, 2008 #1
    Dear Friends, i had an exam today where i had to mark the answers on OMR answer sheets.
    But unfortunately in some answers i marked a bit out of the circle, will it lead to rejection
     
  2. jcsd
  3. May 8, 2008 #2

    mgb_phys

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    Homework Helper

    It's actually optical 'mark' reader.
    No, generally it is a single photodiode that measures each circle, it doesn't look outside the circle and doesn't take a picture. As long as you blocked enough of the circle to reduce the light, it will mark it.
     
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