Thickness of a pencil measured by using a screw gauge (least count 0.001 cm ) comes out to be 0.802 cm. The percentage error in the measurement is

0.125%

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2.43%

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4.12%

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2.14%

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Solution

The correct option is A 0.125%
Given,
Thickness (t)= 0.802cm
Least count= 0.001 cm
now error in measuring t=(0.802±0.001)
So, percentage error=0.001/0.802×100%
=0.1246%
≈0.125%

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Thickness of a pencil measured by using a screw gauge (least count 0.001 cm ) comes out to be 0.802 cm. The percentage error in the measurement is

The correct option is A 0.125%Given, Thickness (t)= 0.802cm Least count= 0.001 cmnow error in measuring t=(0.802±0.001)So, percentage error=0.001/0.802×100% =0.1246% ≈0.125%

The correct option is A 0.125%
Given,
Thickness (t)= 0.802cm
Least count= 0.001 cm
now error in measuring t=(0.802±0.001)
So, percentage error=0.001/0.802×100%
=0.1246%
≈0.125%