Computer Science · Optical Mark Reader (OMR)
How does an Optical Mark Reader (OMR) detect responses on a pre-printed form?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1By measuring the physical indentation made by a pen on the paper
- 2By sensing the magnetic field generated by the graphite pencil
- 3By measuring the reflectivity or presence of light in specific positions✓
- 4By analyzing the chemical composition of the ink used
Correct answer
By measuring the reflectivity or presence of light in specific positions
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