A solid plastic sphere of radius floats in seawater of density

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

Problem

A solid plastic sphere of radius

0.10\,\text{m}

floats in seawater of density

1020\,\text{kg}\,\text{m}^{-3}

. Exactly

70\%

of the sphere’s volume is submerged. What is the density of the sphere? (a)

1020\,\text{kg}\,\text{m}^{-3}

(b)

714\,\text{kg}\,\text{m}^{-3}

(c)

510\,\text{kg}\,\text{m}^{-3}

(d)

1450\,\text{kg}\,\text{m}^{-3}