Upthrust in Fluids, Archimedes’ Principle and Floatation Exe-5B Relative Density and it’s Measurement by Archimedes’ Principle Short Answer Type for Class-9 ICSE Concise Physics. There is the solutions of short Answer type Questions of your latest textbook which is applicable in 2025-26 academic session. Visit official Website CISCE for detail information about ICSE Board Class-9.
Upthrust in Fluids, Archimedes’ Principle and Floatation Exe-5B Short Answer
(ICSE Class – 9 Physics Concise Selina Publishers)
| Board | ICSE |
| Class | 9 |
| Subject | Physics |
| Writer / Publication | Concise selina Publishers |
| Chapter-5 | Upthrust in Fluids, Archimedes’ Principle and Floatation |
| Exe – 5B | Relative Density and it’s Measurement by Archimedes’ Principle |
| Topics | Solution of Exe-5(B) Short Answer Type |
| Academic Session | 2025-2026 |
Exe-5B Relative Density and it’s Measurement Short Answer Type
Ch-5 Upthrust in Fluids, Archimedes’ Principle and Floatation Physics Class-9 ICSE Concise
Page 129
Que-1: Water is heated from 0°C to. 10°C How does the density of water change with temperature?
Ans: On heating from 0°C the density of water increases up to 4°C and then decreases beyond 4°C.
Que-2: What do you understand by the term relative density of a substance?
Ans: The relative density of a substance is the ratio of density of that substance to the density of given reference material and the density of water at 4°C.
(Upthrust in Fluids Exe-5B Short ICSE)
Que-3: Define relative density as a ratio of mass ?
Ans: Relative density is also defined as a ratio of mass of a certain volume of a substance to the mass of an equal volume of water at 4°C.
Que-4: Differentiate between density and relative density of a substance.
Ans:
| Density | Relative density |
| The density of a material is its mass per unit volume. | Relative density of a substance is the ratio of density of a substance to the density of water. |
| ρ = m/V | RD = ρsubstance/ρwate |
| SI unit of density is kg/m3. | Relative density is a dimensionless quantity. |
Density of a substance is the ratio of its mass to its volume but R.D. of a substance is the ratio of density of that substance to the density of water at 4°C.
— : End of Upthrust in Fluids, Archimedes’ Principle and Floatation Exe-5B Short Answer Type Solutions :–
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