Answer
centimeter
Work Step by Step
$1\,dyne = 10^{-5}N$
That is, $g\times\frac{unit\,of\,length}{s^{2}}= 10^{-5} kg\,ms^{-2}$
or the unit of length=$10^{-5} kg\,ms^{-2}\times g^{-1}s^{2}$
$=10^{-5}\times10^{3}m=10^{-2}m= cm$
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