JAMB Physics 2012 Objective — Question 2
Question 2 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2012 Objective paper, with the correct answer and a full explanation.
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In order to remove the error of parallax when taking measurements with a metre rule, the eye should be focused
- A. slantingly towards the left on the markings
- B. slantingly towards the right on the markings
- C. vertically downwards on the markingsCorrect
- D. vertically upwards on the markings
Explanation
The eye should be focused vertically downwards (or perpendicular to) the markings to avoid parallax error.
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