Answer:
The frequency of a wave, f = 103 hertz
Step-by-step explanation:
It is given that a wave passes a wave 412 times in 4 seconds. We need to find the frequency of the wave. We know that the number of vibrations per second at a given point is called the frequency of wave. It can be calculated as :
412 times in 4 seconds. So, in one second number of vibrations of a wave at a given point is

So,the frequency of the wave is 103 hertz. Hence, this is the required solution.