WAEC - Physics (2019 - No. 40)
In the diagram above, the time taken to trace a wave between P and Q is?
2 periods
1 period
1\(\frac{1}{2}\) periods
1\(\frac{1}{4}\) periods
Explicació
frequency means no of oscillation per secs, so the time taken to trace a wave between p and q is 2secs.