The correct option is 9× [tex]10^{-6}[/tex] m is the smallest measurement of length.
The measurement of an object's length from end to end is referred to as length. The term "length" is used to describe an object's size or the separation between two points. The length can be expressed in a variety of units, including meters, centimeters, and kilometers.
When comparing length, the higher the negative power of 10, the smaller will be the number. The higher the positive power of 10, the greater will be the number
9×[tex]10^{-6}[/tex] m = 0.000009 m
7×[tex]10^{-5}[/tex] m = 0.00007 m
7×[tex]10^{1}[/tex] m = 70 m
9 × [tex]10^{2}[/tex]= 900 m
Therefore, 0.0000009 m <0.00007 m< 70 m< 900 m
So, we can say that the smallest value of length is 9× [tex]10^{-6}[/tex] m.
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