Answer :

[tex]0.0002=2\cdot10^{-4}[/tex]
So,

We can see that the digit 2 is 4 units to the right of the decimal point, so in order to write it in scientific notation, we will have to move the decimal point 4 places to the right to get 2.

0.000200 in scientific notation is [tex]2 * 10^{-4} [/tex]