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Answer :
(i)We have 1 micron=\(\frac { 1 }{ 1000000 }\)
\(=\frac{1}{10^6}m=10^{-6}\)
(ii)We know charge of an electron=0.000,000,000,000,000,000,16
\(\frac{16}{1,000,000,000,000,000,000,00}=\frac{1.6\times 10}{1,000,000,000,000,000,000,00}\)
\(=\frac{1.6\times 10}{10^{20}}=1.6\times 10^{1-20}=1.6\times 10^{-19}\)
(iii)We have size of bacteria=0.0000005m
\(=\frac{5}{10000000}m=\frac{0.5\times 10}{10^7}m\)
\(=0.5\times 10^{1-7}m=0.5\times 10^{-6}m\)
\(=5\times 10^{-7}m\)
(iv)We have size of plant cell=0.00001275m
\(=\frac{1275}{100000000}m=\frac{1.275\times 10^3}{10^8}m\)
\(=1.275\times 10^{3-8}m=1.275\times 10^{-5}m\)
\(=1.275\times 10^{-5}m\)
(v)We have thickness of paper=0.07mm
\(=\frac{7}{100}mm=\frac{0.7\times 10}{10^2}mm\)
\(=0.7\times 10^{1-2}mm=0.7\times 10^{-1}mm\)
\(=7\times 10^{-2}mm\)