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प्रश्न
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उत्तर
We can find the relative density of a solid denser than water by following the experiment.
Weighing a solid in air and water
Find the weight (W1 gf) of a solid in the air using a hydrostatic balance.
Tie the solid firmly with a thread and suspend it from the hook. Lower the solid in water and find its weight.
Record the result as shown below:
Weight of solid in air = w1 gf.
Weight of solid in water = W2 gf.
The apparent loss of weight of solid = (W1 - W2 ) gf.
Relative density = W1/ (W1 - W2)
The relative density of the solid = (weight of solid in the air )/(Apparent loss of weight of solid in water).
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संबंधित प्रश्न
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Why is the floating ice less submerged in brine than in water?
A body floats in a liquid A of density ρ1 with a part of it submerged inside the liquid, while in liquid B of density ρ2 it is totally submerged inside the liquid. The densities ρ1 and ρ2 are related as :
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A block of wood of volume 25 cm3 floats in water with 20 cm3 of its volume immersed in water.
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(1) density of wood
(2) the weight of block of wood.
Name an instrument based on this principle. State two uses of the instrument that you describe.
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Name different types of Hydrometers with their applications.
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