Physics Upthrust in Fluids Exercise5b
Please Select
Q1 Define the term density.
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Q2 What are the units of density in (i) C.G.S. and (ii) S.I. system
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Q3 Express the relationship between the C.G.S. and S.I. units of density
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Q4 The density of iron is 7800 kg m-3 . What do you understand by this statement?
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Q5 Write the density of water at 4℃ in S.I. unit.
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Q6 How are the (i) mass, (ii) volume, and (iii) density of a metallic piece affected, if at all, with increase in temperature?
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Q7 Water is heated from 0℃ to 10℃. How does the density of water change with temperature?
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Q8 Complete the following sentences:
(i) Mass = _________ x density
(ii) S.I. unit of density is ___________
(iii) Density of water is _______ kg m-3
(iv) Density in kg m-3 = ________ x density in g cm-
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Q9 What do you understand by the term relative density of a substance?
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Q10 What is the unit of relative density?
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Q11 Differentiate between density and relative density of a substance?
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Q12 With the use of Archimedes’ principle, state how you will find relative density of a solid denser than water and insoluble in it. How will you modify your experiment if the solid is soluble in water?
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Q13 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, (iii) relative density of material of the body.
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Q14 Describe an experiment, using Archimedes’ principle, to find the relative density of a liquid.
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Q15 A body weighs W1 gf in air and when immersed in a liquid it weighs W2 gf, while it weighs W3 gf on immersing it in water. Find: (i) volume of the body (ii) upthrust due to liquid (iii) relative density of the solid and (iv) relative density of the liquid.
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Multiple Choice type Questions :
Q1 Relative density of a substance is expressed by comparing the density of that substance with the density of:
(a) Air
(b) Mercury
(c) Water
(d) Iron
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Q2 The unit of relative density is:
(a) g cm-3
(b) kg m-3
(c) m3 kg-1
(d) no unit
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,
Q3 The density of water is:
(a) 1000 g cm-3
(b) 1 kg m-3
(c) 1 g cm-3
(d) None of these
Solution :
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