How large is the electron deflection when impinging on a screen placed in the distance s to the plate capacitor?

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 Δyscreen of the electrons at the screen must be calculated.Trajectory of the electrons after the deflection in a plate capacitor and impact on a screen


Calculate the electron deflection Δyscreen when impinging on the screen.
Velocity vx = 4,20·107 m/s
Velocity vy = 1,68·107 m/s
Deflection Δy1 = 2,4 cm
Distance to screen s = 8 cm