A tiny metallic rectangular sheet has length and breadth of 5 mm and 2.5 mm, respectively. Using a specially designed screw gauge which has pitch of 0.75 mm and 15 divisions in the circular scale, you are asked to find the area of the sheet. In this measurement, the maximum fractional error will be 
where 
is .
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(3)
Since least count of the instrument can be calculated as
Least count 
.
Here we are provided 
We know that
For calculating fractional error, we can write
Here 
So, 
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