Upthrust in Fluids, Archimedes’ Principle and Floatation Exe-5B Relative Density and it’s Measurement by Archimedes’ Principle Very Short Answer Type for Class-9 ICSE Concise Physics. There is the solutions of Very short Answer type Questions of your latest textbook which is applicable in 2023-24 academic session. Visit official Website CISCE for detail information about ICSE Board Class-9.
Upthrust in Fluids, Archimedes’ Principle and Floatation Exe-5B Very 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) Very Short Answer Type |
Academic Session | 2023-2024 |
Exe-5B Relative Density and it’s Measurement Very Short Answer Type
Ch-5 Upthrust in Fluids, Archimedes’ Principle and Floatation Physics Class-9 ICSE Concise
Page 129
Question 1. Define the term density.
Answer:
The density of a substance is its mass per unit volume.
Question 2. What are the unit of density in (i) C.G.S (ii) S.I system
Answer:
(i) The C.G.S. unit of density is gcm-3.
(ii) The S.I. unit of density is kgm-3.
Question 3. Express the relationship between the C.G.S. and S.I. units of density.
Answer:
1 gcm-3 = 1000 kgm-3
Question 4. ‘The density of iron is 7800 kg m-3‘. What do you understand by this statement?
Answer:
It means the mass of 1 m-3 of iron is 7800 kg.
Question 5. Write the density of water at 4°C in S.I. units.
Answer:
Density of water at 4°C in S.I. units is 1000 kgm-3.
Question 6. How are the (i) Mass, (ii) Volume and (iii) Density of a metallic piece affected, if at all, with an increase in temperature?
Answer:
(i) Mass of a metallic body remains unchanged with increase in temperature.
(ii) Volume of metallic body increases with an increase in temperature.
(iii) Density (= Mass/volume) of a metallic body decreases with an increase in temperature.
(Upthrust in Fluids Exe-5B Very Short ICSE)
Question 7. Complete the following sentences.
(i) Mass = ……………….. × density
(ii) S.I. unit of density is ………. .
(iii) Density of water is …. … kg m-3.
(iv) Density in kg m-3 = ………… × density in g cm-3
Answer:
(i) Volume, (ii) kg m-3, (iii) 1000 and (iv) 1000
Question 8. What is the unit of relative density?
Answer:
Relative density is the ratio of two similar quantities; thus, it has no unit.
Question 9. A body weighs W gf in air and W1 gf when it is completely immersed in water. Find: (i) Volume of the body, (ii) Upthrust on the body and (iii) Relative density of the material of the body.
Answer:
(i) Volume of the body = (W – W1) cm3
(ii) Upthrust on the body = (W – W1)gf
(iii) R.D. of the material of body = W/W – W1
— : End of Upthrust in Fluids, Archimedes’ Principle and Floatation Exe-5B Very Short Answer Type Solutions :–
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