Question

How many nanometers are there in $1$ centimetre ?

Answer 1

Hint : To understand this basic question, we need to know about the metric system that is accepted in our numerical figurative world. So the metric system is a system of measurement that succeeded over the traditional decimal system and basically revolves around the meter that is introduced in France.

Complete Step By Step Answer:
The metric system has some standardized units that use the meter, liter and gram as the units of measurement of length, volume and weight of the substance.
Here in the question are asked about the relation between nanometer and centimetre . These are the units of measurement of the length.
Also, we know that, according to the standard metric system, our standard unit for the measurement of length is “meter”.
To measure different lengths we can convert meters into many smaller units like nanometer, millimetre , centimetre and to big units like kilometre and this is something which is standardized.
So, our one centimetre consists of ten million nanometers . i.e.
$1cm = 10{\text{ million nanometer}}$
${\text{1cm = 100000000 nanometer }}$
${\text{1cm = 10}}{{\text{ }}^9}{\text{nm}}$
Therefore our answer is ${\text{1cm = 10}}{{\text{ }}^9}{\text{nm}}$

Note :
There are some other standard units of measurement, other than the length and they are

Length	Meter	$(m)$
Time	Second	$(s)$
Amount of substance	Mole	$(mole)$
Intensity of light	Candela	$(cd)$
Mass	Kilogram	$(kg)$
Electric current	Ampere	$(A)$
Temperature	Kelvin	$(K)$

So, these are some seven basic units of measurements around which our system of measurement of various substances revolves around, whether is liquid solid or in gaseous phase. This is how measurement goes in day to day lifestyle.