Question

1 micron equals to $\frac{1}{1000000}$ of a metre and can be written as ___.

• A. ${10}^{-6}$ m
• B. ${10}^{-5}$ m
• C. ${10}^6$ m
• D. ${10}^5$ m

Answer 1

The correct option is A ${10}^{-6}$ m

$\text{1 micron}=\frac{1}{1000000}\text{m}$

$=\frac{1}{{10}^6}\text{m}$

$={10}^{-6}\text{m}(\because a^{-m}=\frac{1}{a^m})$