Lissajous patterns for waveforms of equal amplitude with 90 degree phase difference applied to CRO

Q.  If the two input waveforms are of equal amplitude and 90 degree phase difference is applied to the CRO then the Lissajous patterns obtained will be
- Published on 11 Sep 15

a. Straight line tilted at 45 degree with respect to X - axis
b. Circle
c. Ellipse
d. Vertical straight line

ANSWER: Circle

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