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A Lissajous pattern, as shown in the figure is observed on the screen of a CRO when voltage of frequencies f x and fy are applied to the X and Y plates respectively. Then f x: f y is then equal to
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- 3: 2
- 1: 2
- 2: 3
- 2: 1
Correct Option: B
| = | = | |||
| ƒy | points of tangency to horizontal line | 2 |
or ƒx : ƒy = 1 : 2
