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Error and Uncertainty

The least cou...

Question

The least count of a metre rule is :

A

1

cm

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B

1

m

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C

0.1

cm

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D

0.01

cm

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Solution

The correct option is C $0.1$ cm
Least count of an instrument is the smallest measurement which can precisely be taken using that instrument. Thus, for a metre rule least count is 0.1 cm

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