Physics
WAEC 1998
Which of the following explains the concave meniscus of water in a clean glass tube? the
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A.
adhension between water and glass molecules is greater than the sdhension between water molecules
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B.
cohension between water molecules is greater then the adhension between glass and water molecule
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C.
molecules of water near the glass move faster than the molecules at the centre of the tube
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D.
molecules of water at the water-air boundary are often attracted to the centre of the tube
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E.
weight of the water pulls the centre part of the surface down
Correct Answer: Option A
Explanation
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