Physics · 2018
JEE Main · 15 April 2018, Shift 2 · Q12
Two simple harmonic motions, as shown below, are at right angles. They are combined to form Lissajous figures. x( t )= A sin ( at +δ); y( t )= B sin…
Two simple harmonic motions, as shown below, are at right angles. They are combined to form Lissajous figures.
$$\begin{aligned}
& x(\mathrm{t})=\mathrm{A} \sin (\mathrm{at}+\delta) \\
& y(\mathrm{t})=\mathrm{B} \sin (\mathrm{bt})
\end{aligned}
$$
Identify the correct match below.
Parameters Curve
Official answer
(3)
$\displaystyle \mathrm{A} \neq \mathrm{B}, \mathrm{a}=\mathrm{b} ; \delta=\pi / 2 \quad$ Ellipse
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JEE Main 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.