A wooden cylinder floats vertically in water with one fourth of its length immersed. What will be the density of wood?

It equals to the density of water

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It equals to half the density of water

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It equals to one fourth the density of water

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It equals to three fourths the density of water

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Solution

The correct option is C It equals to one fourth the density of water
Since, $R e l a t i v e d e n s i t y = \frac{V o l u m e o f b o d y i m m e r s e d}{T o t a l v o l u m e o f b o d y}$
$R e l a t i v e d e n s i t y = \frac{1}{4}$
hence, density of wood is $\frac{1}{4}$ times density of water.

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