A wooden block floats in fresh water with 80 % of its volume below the surface

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A wooden block floats in fresh water with 80 % of its volume below the surface. Approximately what percentage of its volume will be submerged when it floats in sea water of density 1030 kg m−31030\,\text{kg\,m}^{-3}? (Density of fresh water =1000 kg m−3=1000\,\text{kg\,m}^{-3}) (a) 82%82\% (b) 74%74\% (c) 78%78\% (d) 80%80\%

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