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chapter 1 Exploration: Entering the World of Secondary Science - Part 5

Why should a ruler be read with the eye directly above the mark?

Type: MCQ • Marks: 1
Why should a ruler be read with the eye directly above the mark?
Options
A. To reduce parallax error
B. To increase the object's mass
C. To avoid using units
D. To change the ruler's scale
Explanation
Viewing straight above the mark helps prevent an apparent shift in the reading.
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Class 9th Science (MCQ)

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