The equation of motion of a particle is \( x=a \cos (\alpha t)^{2} ...

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The equation of motion of a particle is \( x=a \cos (\alpha t)^{2} \). The motion is
[NCERT Exemplar]
\( \mathrm{P} \)
(a) Periodic but not oscillatory
(b) Periodic and oscillatory
(c) Oscillatory but not periodic
(d) Neither periodic nor oscillatory
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