The diagram displays a wave pattern on the screen of an oscilloscope. The y-gain is set to $3.5\,\text{mV cm}^{-1}$. What is the amplitude of the wave?
- A$0.57\,\text{mV}$
- B$3.5\,\text{mV}$
- C$7.0\,\text{mV}$
- D$14\,\text{mV}$
Physics 9702 · AS & A Level · Progressive waves