Question:
(i) 1 micron $=\frac{1}{1000000} \mathrm{~m}$. Express it in standard form.
(ii) Size of a bacteria $=0.0000004 \mathrm{~m}$. Express it in standard form.
(iii) Thickness of a paper $=0.03 \mathrm{~mm}$. Express it in standard form.
Solution:
(i) 1 micron $=\frac{1}{1000000} \mathrm{~m}=1 \times 10^{-6} \mathrm{~m}$
(ii) $0.0000004 \mathrm{~m}=\frac{4}{10^{7}} \mathrm{~m}=\left(4 \times 10^{-7}\right) \mathrm{m}$
(iii) Thickness of paper $=0.03 \mathrm{~mm}=\frac{3}{10^{2}} \mathrm{~mm}=\left(3 \times 10^{-2}\right) \mathrm{mm}$