K.C.S.E Physics Q & A - MODEL 1995PP1QN13

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The diagram in figure 4 shows two glass tubes of different diameters dipped in water

​Explain why h₂ is greater than h₁ ( 3 mks)

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KNEC ANSWERS

• Surface tension / adhesive forces supports water column or more capillarity in tube 2 than tube 1
  
• Surface tension is the same in both tubes and equal to the  weight  of water column supported
  
• Narrow tube has longer column to equate weight to wider tube
  
• Volume of water  in the tubes  is same hence narrower tube higher column