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Question
A boy makes a ruler with graduations in cm on it, (i.e. 100 divisions in 1 m). To what accuracy this ruler can measure? How can this accuracy be increased?
Solution
Total length of the ruler = 1 m = 100 cm
No. of divisions = 100
Length of each division = `"Total length"/"total no. of divisions"`
= 100 cm/100
= 1 cm
Thus, this ruler can measure with an accuracy of 1 cm.
To increase the accuracy, the total number of divisions on the ruler must be increased.
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