Question

Which of the following has the highest numeric value?
A. $100Tm$
B. $1000Gm$
C. ${10^4}mm$
D. ${10^6}nm$

Answer 1

Hint: Here $Tm$ represents terameter, $Gm$ represents gigameter, $mm$ represents millimeter and $nm$ represents nanometer. In order to find out the highest numeric value, we have to correlate these different units. And we will get $100Tm$ has the highest numeric value.

Complete step by step answer:
Terameter, gigameter, millimeter and nanometer are the units of length. These all units are used to measure the length of a substance. Length is the measure of distance. Length is a quantity with units. Length has a standard international unit of meter. The following units are related to each other as:
$\
   \Rightarrow {10^6}nm = {10^{ - 12}}Gm \\
   \Rightarrow {10^4}mm = {10^{ - 10}}Gm \\
   \Rightarrow 100Tm = 100000Gm \\
\ $
Where, $Tm$ = Terameter
$Gm$ = Gigameter
$mm$ = Millimeter
$nm$ = Nanometer
So, it is clearly seen that tetrameter has the highest numeric value among all of them

Hence, option A is correct.

Note:
Generally, Length is usually understood to mean the most extended dimension of a fixed object. But this is not always the same case. It also depends on the position the object is in.
There are so many terms which are used for length and they are such as height. Height is the vertical length or vertical extent. Also used as width, breadth or depth. Height is measured when there is a presence of base from which the vertical measurements could be taken. Width or breadth usually mean a shorter dimension when length is the longest one. And in the case of three dimensional objects Depth is used for the third dimension.
In other definitions, the measure of one spatial dimension is called length. But on the other hand area is measured with two dimensions (length squared) and volume is measured with three dimensions (length cubed).