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In measuring instruments a mirror is provided behind the pointer with a purpose that | |
A. | with the help of the mirror it may be seen whether the pointer is bent or not [Wrong Answer] |
B. | the scale is illuminated through the mirror [Wrong Answer] |
C. | reading errors due to inclined observation are eliminated by removing parallax between the pointer and its image in the mirror [Correct Answer] |
D. | any of the above [Wrong Answer] |