A block of mass \( \mathrm{m} \) is oscillating on a smooth surface...

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A block of mass \( \mathrm{m} \) is oscillating on a smooth surface between two light springs of spring
\( \mathrm{P} \) constant \( \mathrm{k} \) separated by a distance \( \ell \) colliding

W elastically with the springs. If the velocity of the block is increased by an external impulse when it is not touching either of the spring then time period
(1) Increases.
(2) Decreases
(3) remains same.
(4) Time period is independent of \( \ell \)
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