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The Lissajous pattern of eight, on an oscilloscope, keeps on changing the shape when the ratio of frequencies is | |
A. | exactly 4 : 1 [Wrong Answer] |
B. | exactly 3 : 1 [Wrong Answer] |
C. | not exactly 2 : 1 [Correct Answer] |
D. | not exactly 1 : 1 [Wrong Answer] |