Question

A pules move n times to and fro and the stop watch show time t second . The timeperiod of pules is

Answer 1

Hey
The movment in per second is frequency therefore in n seconds the frequency is :
f = 1*n/t = n/t

Hope it helps :))

Answer 2

A pules move n times to and fro and the stop watch show time t second . The timeperiod of pules is (n*t).