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What is the value of density of water?

Important Questions on Gravitation

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The weight of the wooden block is W. The apparent weight of the body on floating water is
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Two metal pieces when immersed in liquid experience equal upthrust on them, then :
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A block floats with its fraction ηE inside water when immersed in a beaker containing water and kept on the earth. The beaker along with the block is shifted to the surface of the moon. If ηM is the fraction of the block now immersed in water, which of the following relations is correct? 
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A metal sphere is dipped in water. If at 0 °C & 4 °C  the buoyancies in water are β1 and β2 respectively, then :
MEDIUM

A jar is filled with two non-mixing liquids 1 and 2 having densities d1 and d2, respectively. A solid ball, made of a material of density d3, is dropped in the jar. It comes to equilibrium in the position shown in the figure. Which of the following is true for d1, d2 and d3?

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The SI unit of relative density is
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The volume of 50 g of a substance is 20 cm3. If the density of water is 1 g cm-3 will the substance float or sink?
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A piece of steel has a volume of 12 cm3 and a mass of 96 g. What is its density in g cm-3?

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How can you define volume and density of a substance?
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For determining the density of a copper piece using a spring balance and a measuring cylinder, Seema carried out the following procedure:
i. Noted the water level in the measuring cylinder without the copper piece.
ii. Immersed the copper piece in the water.
iii. Noted the water level in the measuring cylinder with the copper piece inside it.
iv. Removed the copper piece from the water and immediately weighed it using a spring balance.
The wrong step in the procedure is
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While performing the experiment 'to determine the density of a solid, four measuring cylinders with least counts 2.5 mL, 1.0 mL, 0.5 mL and 0.2 mL are available. Which one will you prefer for finding the density of a solid accurately?
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A solid object of mass 200 g and volume 250 cm3 is put in water. Will it float or sink?
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While determining the density of copper piece using spring balance and a measuring cylinder, Nitin carried out the following procedure:
(i) Noted the water level in the measuring cylinder without the copper piece.
(ii) Immersed the copper piece in the water.
(iii) Noted the water level in the measuring cylinder with the copper piece inside it.
(iv) Removed the copper piece from the water and immediately weighed it using a spring balance.
The wrong step in the produce is:
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The mass of an empty 40 litre petrol tank of a vehicle is 8 kg. What will be its mass when filled completely with a fluid of density 700 kg m-3.
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The volume of a substance is 20 cm3. The mass of the substance if its relative density is 2.5 will be _____.
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Define density. What is SI unit of density?
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The unit of specific gravity is
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If a body is compressed to half its previous volume, its density:
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Unit of relative density of the substance