Solution

Data:

Formula:

\({\rm{Frequency\;f}} = \frac{1}{{\rm{T}}}{\rm{\;}}\)

Calculation:                        

\({\rm{f}} = \frac{1}{{100{\rm{\;ms}}}} = \frac{1}{{100 × {{10}^{ - 3}}{\rm{s}}}} = 10{\rm{\;}}{{\rm{s}}^{ - 1}} = 10{\rm{\;Hertz}}\)

f = 10 × 10^-3 kilohertz = 10^-2  kilohertz