1.Units, Dimensions and Measurement
medium

પ્રયોગમાં સાદા લોલકના દોલનના સમયગાળાની યાદી અનુક્રમે $2.63\,s, 2.56\,s, 2.42\,s, 2.71\,s$ અને $2.80\,s$ છે. તો સરેરાશ નિરપેક્ષ ત્રુટિ કેટલા ........... $s$ હશે?

A

$0.1$

B

$0.11$

C

$0.01 $

D

$1.0$

Solution

$T\,\, = \,\,\frac{{2.63\,\, + \;\,2.56\,\, + \;\,2.42\, + \;\,2.71\,\, + \;2.80}}{5}$

$ = \,\,\frac{{13.12}}{5}\,\, = \,\,2.624\,\, \cong \,\,2.62$

$\begin{gathered}
  \left( 1 \right)\,\,2.62\,\, – \,\,2.63\,\, = \, – 0.01 \hfill \\
  \left( 2 \right)\,\,2.62\,\, – \,\,2.56\,\, = \,\, + 0.06 \hfill \\
  \left( 3 \right)\,\,2.62\,\, – \,\,2.42\,\, = \,\, + \;\,0.20 \hfill \\
  \left( 4 \right)\,\,2.62\,\, – \,\,2.71\,\, = \,\, – 0.09 \hfill \\
  \left( 5 \right)\,\,2.62\,\, – \,\,2.80\,\, = \,\, – 0.18 \hfill \\ 
\end{gathered} $

સરેરાશ નિરપેક્ષ ત્રુટિ $ = \frac{{0.01\,\, + \;\,0.06\,\, + \;\,0.20\,\, + \;\,0.09\,\, + \;\,0.18}}{5}\,$

$ = \frac{{0.54}}{5}\,\, = \,\,0.108\,\, \cong \,\,0.11s$

Standard 11
Physics

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