The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If X-plate input is 2 sin ωt, the Y-plate input is

1.

The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If X-plate input is 2 sin ωt, the Y-plate input is

[A].	2 sin ωt
[B].	2 sin (ωt + 45°)
[C].	2 sin (ωt - 45°)
[D].	2√2 sin ωt + 45°)

Answer: Option A

Explanation:

When signals to X and Y plates are in phase, the display is a straight line inclined at 45°.

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