Physics
Write true or false for each statement:
(a) Equal volumes of two different substances have equal masses.
(b) The density of a piece of brass will change by changing its size or shape.
(c) The density of a liquid decreases with increase in its temperature.
(d) Relative density of water is 1.0.
(e) Relative density of a substance is expressed in g cm-3.
(f) When a body is immersed in a liquid, the buoyant force experienced by the body is equal to the volume of the liquid displaced by it.
(g) A body experiences the same buoyant force while floating in water or alcohol.
(h) A body experiences the same buoyant force when it floats or sinks in water.
(i) A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
(j) A body while floating, sinks deeper in a liquid of low density than in a liquid of high density.
Measurements
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Answer
(a) False
Correct Statement — Equal volumes of two different substances have different masses.
(b) False
Correct Statement — The density of a piece of brass will not change by changing its size or shape.
(c) True
(d) True
(e) False
Correct Statement — Relative density has no unit.
(f) False
Correct Statement — When a body is immersed in a liquid, the buoyant force experienced by the body is equal to the weight of the liquid displaced by the immersed part of the body.
(g) True
(h) False
Correct Statement — The buoyant force experience by the body is different when floating or sinking in water.
(i) True
(j) True
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