Write difference between Mistake and Error.

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mistake error

$(1)$ mistake iws caused due to carelessness wrong calculation , improper method of measurment.

$(1)$ Error is caused due to imperfect design of measuring instrument , observation limitation of individuals
$(2)$ by taking proper care the mistake can be sort out completely. $(2)$ by taking more observation by using instrument having smaller least copunt error can be eliminated

 

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Students $I$, $II$ and $III$ perform an experiment for measuring the acceleration due to gravity $(g)$ using a simple pendulum.

They use different lengths of the pendulum and /or record time for different number of oscillations. The observations are shown in the table.

Least count for length $=0.1 \mathrm{~cm}$

Least count for time $=0.1 \mathrm{~s}$

Student Length of the pendulum $(cm)$ Number of oscillations $(n)$ Total time for $(n)$ oscillations $(s)$ Time period $(s)$
$I.$ $64.0$ $8$ $128.0$ $16.0$
$II.$ $64.0$ $4$ $64.0$ $16.0$
$III.$ $20.0$ $4$ $36.0$ $9.0$

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