Question

(i) 1 micron = $\frac{1}{1000000}$ m. Express it in standard form.
(ii) Size of a bacteria = 0.0000004 m. Express it in standard form.
(iii) Thickness of a paper = 0.03 mm. Express it in standard form.

Answer 1

(i) $1\mathrm{micron}=\frac{1}{1000000}\mathrm{m}=1\times {10}^{-6}\mathrm{m}$

(ii) $0.0000004\mathrm{m}=\frac{4}{{10}^7}\mathrm{m}=\left(4\times {10}^{-7}\right)\mathrm{m}$
(iii) $\mathrm{Thickness}\mathrm{of}\mathrm{paper}=0.03\mathrm{mm}=\frac{3}{{10}^2}\mathrm{mm}=\left(3\times {10}^{-2}\right)\mathrm{mm}$