What is a significant number? What is a significant digit?
(N/A) significant number refers to a number that expresses the precision of a measurement. It includes all the digits that are known with certainty plus the first digit that is uncertain.
$A$ significant digit (or significant figure) is any of the digits in a number that contribute to its degree of accuracy. These include all non-zero digits,zeros between non-zero digits,and trailing zeros in a decimal number. Leading zeros are not considered significant.
$A$ significant digit (or significant figure) is any of the digits in a number that contribute to its degree of accuracy. These include all non-zero digits,zeros between non-zero digits,and trailing zeros in a decimal number. Leading zeros are not considered significant.
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Similar Questions
Statement-$1$: All reliable digits plus the first uncertain digit together are called significant figures.
Statement-$2$: Trailing zero$(s)$ in a number with a decimal point are never significant.
Statement-$2$: Trailing zero$(s)$ in a number with a decimal point are never significant.
Easy
View Solution$Assertion$ : The number of significant figures depends on the least count of the measuring instrument.
$Reason$ : Significant figures define the accuracy of the measuring instrument.
$Reason$ : Significant figures define the accuracy of the measuring instrument.
The number of significant figures in the simplification of $\frac{0.501}{0.05}(0.312-0.03)$ is
Which of the following measurements of length is the most precise? Why?
$(i) \ 2.0 \ cm$
$(ii) \ 2.00 \ cm$
$(iii) \ 2.000 \ cm$
$(i) \ 2.0 \ cm$
$(ii) \ 2.00 \ cm$
$(iii) \ 2.000 \ cm$
Easy
View SolutionThe radius of a circle is $2.12 \ m$. Its area according to the rule of significant figures is ......... $m^2$.
Easy
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