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Question
A glass beaker is half-filled with water and an empty glass tumbler is inverted & lowered inside the glass beaker. State your observations on tilting the tumbler below the level of the water in the glass beaker. Give a reason for your answer.
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Solution
(1) Take a glass beaker half-filled with water as shown in the diagram.
(2) Take an empty glass tumbler which contains air is inverted and lowered inside the glass beaker.
(3) On tilting the tumbler the air inside the tumbler is displaced and bubbles of air are seen coming out. The air is pushed out by the water on tilting the tumbler inside the beaker of water. This experiment or procedure also proves that air or gases occupy space
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