Question

If ten waves pass a given point in two seconds, then what is the frequency of the waves?? Help asap pls

Answer 1

It is five waves per second 

Answer 2

"Frequency" is just the number of complete waves
that pass by in ONE second.

If ten waves passed by in 2 seconds, then
5 of them passed by in each second.

The frequency is  5 per second.  That's  5 Hz.  (Choice-B)