Correct option is C
A Lissajous pattern is formed when two sinusoidal waves of different or the same frequency and amplitude are applied at right angles to each other. These patterns are typically observed on an oscilloscope when signals are applied to the X and Y axes.
The shape of the Lissajous figure depends on:
· Frequency ratio of the two signals
· Phase difference between them
· Amplitude of the waves
Lissajous patterns are widely used in oscilloscope measurements to determine the frequency and phase difference between two signals.