Significant Figures
Scientific Notation In which any
number can be represented in the form N × 10 n (Where n is an
exponent having positive or negative values and N can vary between 1 to
10). e.g. We can write 232.508 as 2.32508 x10 2 in scientific
notation. Similarly, 0.00016 can be written as 1.6 x 10 –4 . Precision refers to the
closeness of various measurements for the same quantity. Accuracy is
the agreement of a particular value to the true value of the result Significant
Figures The reliability of
a measurement is indicated by the number of digits used to represent it.
To express it more accuratelywe express it with digits that are known
with certainty. These are called as Significant figures. They contain all
thecertain digits plus one doubtful digit in a number. Rules for Determining the
Number of Significant Figures All non-zero
digits are significant. For example, 6.9 has two significant figures,
while 2.16 has three significantfigures. The decimal place does not
determine the number of signi…