Class 11 / Physics / Units and Measurements / Accuracy, Precision and Errors

ACCURACY, PRECISION OF INSTRUMENTS AND ERRORS IN MEASUREMENT

ACCURACY, PRECISION OF INSTRUMENTS AND ERRORS IN MEASUREMENT   Measurement is the foundation of all experimental science and technology.The result of every measurement by any measuring inst

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Class 11 / Physics / Units and Measurements / Accuracy, Precision and Errors

Systematic errors

Systematic Errors   The systematic errors are those errors that tend to be in one direction, either positive or negative.Some of the sources of systematic errors are :   (a).Inst

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Class 11 / Physics / Units and Measurements / Accuracy, Precision and Errors

Random Errors

Random Errors The random errors are those errors, which occur irregularly and hence are random with respect to sign and size.These can arise due to random and unpredictable fluctuations in exp

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Class 11 / Physics / Units and Measurements / Accuracy, Precision and Errors

Least Count Error

Least Count Error The smallest value that can be measured by the measuring instrument is called its least count.All the readings or measured values are good only up to this value.   The

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Class 11 / Physics / Units and Measurements / Accuracy, Precision and Errors

Absolute Error, Relative Error and Percentage Error

Absolute Error, Relative Error and Percentage Error (a)Suppose the values obtained in several measurements are a1,a2, a3 ...., a .The arithmetic mean of these values is taken as the best possi

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Class 11 / Physics / Units and Measurements / Accuracy, Precision and Errors

Combination of Errors

Combination of Errors If we do an experiment involving several measurements, we must know how the errors in all the measurements combine. For example,mass density is obtained by deviding mass by th

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