Question

The usual from for $2.03\times {10}^{-5}$

• A. $0.203$
• B. $0.00203$
• C. $203000$
• D. $0.0000203$

Answer 1

The correct option is D $0.0000203$

Using law of exponents, $a^{-m}=\frac{1}{a^m}$
$\Rightarrow 2.03\times {10}^{-5}=\frac{2.03}{{10}^5}$
$\Rightarrow 2.03\times {10}^{-5}=0.0000203$