A plastic sphere floats in water with 50% of its volume submerged. if it floats...

JAMB 2009

A plastic sphere floats in water with 50% of its volume submerged. if it floats in glycerine with 40% of its volume submerged,the density of the glycerine is?

A. 1400 kgm^-3
B. 1250 kgm^-3
C. 500 kgm^-3
D. 1000 kgm^-3

JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!

WAEC GCE Nov/Dec 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 332996

Correct Answer: Option B

Explanation

Weight of glycerine displaced = weight of water dispalced
Mgh glycerine = Mgh water
Pvgh glycerine = Pvgh water
0.4V P glycerine = (0.5v)/v.4v P water = 1.25
(Polycerine)/p water =
But density of substance = relative density x density of water = 1. 25 x 1000kgm3 = 1250kgm-3

There is an explanation video available below.

Previous Next

Go back to Phy classroom

Report an Error Ask A Question Download App