1. An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen. By tweaking the time sweep, the periodic saw-tooth voltage of the oscilloscope is replaced with voltage signal identical to the one that is detected. What will be observed on the oscilloscope screen?
2. On a 20 MHz oscilloscope as those utilized in class, the knob of the time sweep rate shows for the fastest setting the mark of 0.2 microseconds per main division in horizontal direction on the screen. How many full periods of a 5 MHz periodic signal will be observed in one main horizontal division?