Physics (AS & A Level) · Feb / March 2018 · Paper 12 · Question 6

A cathode-ray oscilloscope (c.r.o.) is connected to an alternating voltage. The following trace is produced on the screen. The oscilloscope time-base setting is 0.5 ms cm⁻¹ and the Y-plate sensitivity is 2 V cm⁻¹. Which statement about the alternating voltage is correct?

1. AThe amplitude is 3.5 cm.
2. BThe frequency is 0.5 kHz.
3. CThe period is 1 ms.
4. DThe wavelength is 4 cm.

As printed in the paper