Four hollow glass spheres PPP, QQQ, RRR, and S S\,S each have a mass of 120 g.
Their volumes are given in the table:
| Sphere | Volume (cm3\text{cm}^3cm3) |
|---|---|
| PPP | 80 |
| QQQ | 100 |
| RRR | 120 |
| SSS | 140 |
Which spheres sink in a liquid of density 1.1 g/cm3?
PPP and QQQ only
PPP, QQQ and RRR
RRR and SSS only
SSS only
169 exam-style questions on CIE IGCSE Physics Density, covering Density. Each one has a worked solution and a mark scheme showing where the marks go.