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The bob of a simple pendulum executes simple harmonic motion in water with a period \( t \), while the period of oscillation
\( \mathrm{P} \) of the bob is \( t_{0} \) in air. Neglecting frictional force of water and given that the density of the bob is (4/3) \( \times 1000 \mathrm{~kg} / \mathrm{m}^{3} \). What
W relationship between \( t \) and \( t_{0} \) is true
[AIEEE 2004]
(a) \( t=t_{0} \)
(b) \( t=t_{0} / 2 \)
(c) \( t=2 t_{0} \)
(d) \( t=4 t_{0} \)
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