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Lissajous Pattern-2

For a Lissajo...

Question

For a Lissajous pattern shown in below figure. If the frequency of horizontal signal is 3 kHz. Then the frequency of vertical signal is

A

1 kHz

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B

1.2 kHz

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C

7.5 kHz

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D

9 kHz

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Solution

The correct option is C 7.5 kHz
$\frac{f_{y}}{f_{x}} = \frac{5}{2}$

$f_{y} = 2.5 \times f_{x}$

$∴$ frequency of vertical voltage signal
$= 2.5 \times 3$
$= 7.5$ kHz

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