Question

2) Answer in brief.
i) Why is the surface tension of paints and
lubricating oils kept low?
ii) How much amount of work is done in
forming a soap bubble of radius r?
H) What is the basis of the Bernoulli's
principle?
Tv) Why is a low density liquid used as
a manometric liquid in a physics
laboratory?
What is​

Answer 1

Answer:

brief and.............