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Q.

How to find the surface tension of water using travelling microscope & capillary tubes & determine the effective rise in temperature

Asked by Janice Sequeira, 05 Nov '08 10:21 pm
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Answers (2)

1.

Set the travelling microscope.
adjust it accordingly.
focus it untill you see a bore.
record both the main scale and vernier scale reading.
repeat the observations
Answered by prema lohit, 13 Feb '10 10:35 pm

 
  
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2.

As the question remained un answered, probably due to lack of clarity, let me offer this comments: traveling microscope is only to determine accurately the column height of the liquid in the capillary (capillary rise method) and the internal diameter ( from that radius)of the tube, to be substituted in the equation for "h" and "r ". For the second part, one can determine the surface tension for the same system at diff temp. and derive the relationship by means of a plot of Surface tension Vs temp.
Answered by Arakuzha Ramachandran, 09 Nov '08 08:38 am

 
  
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