\begin{tabular}{|l|l|l|l|}
\hline Prefix & Symbol & Power of 10 & Decimal Value \\
\hline mega & M & [tex]$10^6$[/tex] & [tex]$1,000,000$[/tex] \\
\hline kilo & K & [tex]$10^3$[/tex] & 1,000 \\
\hline hecto & h & [tex]$10^2$[/tex] & 100 \\
\hline deka & da & [tex]$10^1$[/tex] & 10 \\
\hline deci & d & [tex]$10^{-1}$[/tex] & 0.1 \\
\hline centi & c & [tex]$10^{-2}$[/tex] & 0.01 \\
\hline milli & m & [tex]$10^{-3}$[/tex] & 0.001 \\
\hline micro & [tex]$\mu$[/tex] & [tex]$10^{-6}$[/tex] & 0.000001 \\
\hline nano & n & [tex]$10^{-9}$[/tex] & 0.000000001 \\
\hline pico & p & [tex]$10^{-12}$[/tex] & 0.000000000001 \\
\hline
\end{tabular}

One nanometer is equal to how many centimeters?

A. [tex]$10^9 \, \text{mm}$[/tex]

B. [tex]$10^{-6} \, \text{cm}$[/tex]

C. [tex]$10^{-7} \, \text{cm}$[/tex]

D. [tex]$10^{-9} \, \text{mm}$[/tex]



Answer :

To determine how many centimeters one nanometer is equal to, we need to convert nanometers to centimeters.

First, let's understand the relationship between these units:
- A nanometer is [tex]\( 10^{-9} \)[/tex] meters.
- A centimeter is [tex]\( 10^{-2} \)[/tex] meters.

To convert nanometers to centimeters, we can follow these steps:

1. Convert Nanometers to Meters:
Since 1 nanometer (nm) is equal to [tex]\( 10^{-9} \)[/tex] meters (m), we start with:
[tex]\[ 1 \, \text{nm} = 10^{-9} \, \text{m} \][/tex]

2. Convert Meters to Centimeters:
Knowing that 1 meter is equal to 100 centimeters ([tex]\( 10^2 \)[/tex] cm), we can write:
[tex]\[ 1 \, \text{m} = 10^2 \, \text{cm} \][/tex]
Therefore, to convert meters to centimeters, we multiply meters by [tex]\( 10^2 \)[/tex]:
[tex]\[ 10^{-9} \, \text{m} \times 10^2 \, \frac{\text{cm}}{\text{m}} = 10^{-7} \, \text{cm} \][/tex]

Hence, one nanometer is equal to [tex]\( 10^{-7} \)[/tex] centimeters.

Therefore, the correct answer is:
C. [tex]\( 10^{-7} \, \text{cm} \)[/tex]