A simple pendulum of length \( 1 \mathrm{~m} \) is allowed to oscil...

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A simple pendulum of length \( 1 \mathrm{~m} \) is allowed to oscillate with amplitude \( 2^{\circ} \). It collides elastically
\( \mathrm{P} \) with a wall inclined at \( 1^{\circ} \) to the vertical. Its time

W period will be : (use \( \left.g=\pi^{2}\right) \)
(1) \( 2 / 3 \mathrm{sec} \)
(2) \( 4 / 3 \mathrm{sec} \)
(3) \( 2 \mathrm{sec} \)
(4) None of these
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