Explanation
The technology that is mainly used in checking objective type answer paper in examinations is Optical Mark Recognition (OMR).
OMR technology involves the use of a special scanner that detects and reads marks made on a sheet of paper using a pencil or pen. The sheet contains a series of bubbles or rectangles that correspond to different answer options. The student fills in the bubble or rectangle corresponding to their chosen answer, and the scanner detects the mark and records it as a response.
OMR technology is popular in examination settings because it is fast and accurate, allowing for the quick processing of large volumes of answer sheets. It is also less prone to errors compared to manual checking, as the technology can detect and reject invalid or ambiguous responses.
MICR (Magnetic Ink Character Recognition) and OCR (Optical Character Recognition) are other forms of scanning technology but are not commonly used in checking objective type answer papers in examinations. MICR is mainly used for check processing, while OCR is used for converting scanned documents into editable text.
