Surface Tension - Viva Voice Questions with Answer
For: Science Class 11 ( Practical Exam )
Q.1: Define surface tension?
Ans. “The tangential cohesive force acting along the unit length of the surface of a liquid”
T = F / L
L = length of the line
In this experiment:
F = m g = weight of the pan + weight in the pan.
L = 2 (length of the slide) + 2 (breadth of the slide).
Sometime we neglect the breadth since it is very small.
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