What is the cause of an error?
Explain a)personalerror b)randomerror
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An error in measurement caused by factors which vary from one measurement to another is called random error. Causes of random errors: Fluctuating conditions: for e.g. variation in temperature or in the environment may introduce an error in the measurement.
a) the errors which are introduced due to fault of the observer is known as Personal error, for example carelessness in taking observation etc. Random error: the errors which occurs due to variation in conditions in which experiment is performed.
b) Random errors in experimental measurements are caused by unknown and unpredictable changes in the experiment. These changes may occur in the measuring instruments or in the environmental conditions.
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