Calculate the frequency for each of the following periods:
(a) [tex]1 \mathrm{~s}[/tex]
(b) [tex]0.2 \mathrm{~s}[/tex]
(c) [tex]50 \mathrm{~ms}[/tex]
(d) [tex]1 \mathrm{~ms}[/tex]
(e) [tex]500 \mu \mathrm{s}[/tex]
(f) [tex]10 \mu \mathrm{s}[/tex]