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A small body with relative density \( d_{1} \) falls in air from a height \( h \) on to the surface of a liquid of relative density \( d_{2} \) where \( d_{2}d_{1} \). The time elapsed after entering the liquid to the instant when it comes to instantaneous rest inside liquid :
(a) \( \sqrt{\frac{2 h}{g}} \frac{d_{2}}{d_{1}} \)
(b) \( \sqrt{\frac{2 h}{g}} \cdot \frac{d_{1}}{d_{2}-d_{1}} \)
(c) \( \sqrt{\frac{2 h}{g}} \frac{d_{1}}{d_{2}} \)
(d) \( \sqrt{\frac{2 h}{g}} \frac{d_{2}-d_{1}}{d_{1}} \)
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