Bigger the least count of an instrument, ___ the accuracy of the measurement made by the instrument.
Bigger the least count of an instrument,
The least count of an instrument is the smallest measurement that can be taken accurately with it. Bigger the least count of an instrument, less precise is the measurement made by using it, as the measurement described will be approximate to a larger place value.
For example, if the length of an object is 12.567 cm, and the least count of the measuring device is 1 mm (0.1 cm), then the measurement will be correct to the first decimal place, or 12.5 cm. The inaccuracy in measurement is described by the length 0.067 cm. If the measuring instrument has a least count of 0.1 mm (0.01 cm), then the length measured by the instrument is equal to 12.56 cm, with the inaccuracy in measurement being described by the length 0.007 cm.
Hence, larger the least count, lesser the accuracy in measurement
The least count of an instrument is the smallest measurement that can be taken accurately with it. Bigger the least count of an instrument, less precise is the measurement made by using it, as the measurement described will be approximate to a larger place value.
For example, if the length of an object is 12.567 cm, and the least count of the measuring device is 1 mm (0.1 cm), then the measurement will be correct to the first decimal place, or 12.5 cm. The inaccuracy in measurement is described by the length 0.067 cm. If the measuring instrument has a least count of 0.1 mm (0.01 cm), then the length measured by the instrument is equal to 12.56 cm, with the inaccuracy in measurement being described by the length 0.007 cm.
Hence, larger the least count, lesser the accuracy in measurement
