The true length of a wire is 
. When the length of this wire is measured using instrument 
, the length of the wire is 
. When the length of the wire is measured using instrument 
, it is found to have length 
. Then the
is more accurate and precise.
is more accurate while measurement with 
is more precise.
is more accurate and precise.
is more precise while measurement with 
is more accurate.
Text Solution
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: True value 
Accuracy of a measurement is a measure of how close the measured value is to the true value of the length. Here, measured value i.e., 
is more closer to true value 
as compared to 
. Hence 
measured by instrument 
is more accurate. Now, precision tells us to what resolution the value is calculated. The more number of digits after decimal, the more is the precision of the measurements. Here, 
has 2 digits after the decimal as compared to 
which has only 1 digit after the decimal. Hence, the 
measured by the instrument 
is more precise measurement.
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