In technical applications for example an oszilloscope a screen is placed in distance \(s\) after the plate capacitor. This screen shows the impinge of electrons. So now the deflection \(\Delta y_{\rm{screen}}\) of the electrons at the screen must be calculated.## Task:

Electrons are leaving the plate capacitor (see picture) with an deflection of \(\Delta y_1=2.4\,\rm{cm}\). The electron velocity in *x*-direction is \(v_x=4.20\cdot 10^7\,\rm{\frac{m}{s}}\) ans in *y*-direction \(v_y=1.68\cdot 10^7\,\rm{\frac{m}{s}}\). The distance between the end of the capacitor and the screen is \(s=8\,\rm{cm}\).

- Calculate the electron deflection \(\Delta y_{\rm{screen}}\) when impinging on the screen.
- Explain how the deflection on the screen from task
**a)**changes when you double the distance \(s\) of the screen from the end of the plate capacitor.