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When a water droplet is placed on a freshly cut piece of wood, it spreads...

Physics
JAMB 2023

When a water droplet is placed on a freshly cut piece of wood, it spreads out to form a thin layer because the wood is

  • A. not at equilibrium with the water
  • B. cohesive to water
  • C. at equilibrium with the water
  • D. adhesive to water
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Correct Answer: Option D
Explanation

Adhesive surfaces are surfaces that are wetted by water. This means that the water molecules are attracted to the wood surface, and they spread out to form a thin layer in order to maximize their contact with the surface. The adhesive forces between the water molecules and the wood surface are stronger than the cohesive forces between the water molecules, resulting in a thin layer.

There is an explanation video available below.


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Explanation Video

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