Figure 8 shows water drops on two surfaces. In figure 8 (a) the glass surface is smeared with wax while in figure 8 (b) the...

      

Figure 8 shows water drops on two surfaces. In figure 8 (a) the glass surface is smeared with wax while in figure 8 (b) the glass surface is clean.
waterdrops41320171047.jpg
Explain the difference in the shapes of the drops

  

Answers


John
In (a) the cohesive force between water molecules are greater than adhesive force between water and glass molecules while in (b), the adhesive forces between water and glass molecules are greater than cohesive forces between water molecules.
johnmulu answered the question on April 13, 2017 at 07:51


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