There is a horizontal film of soap solution. On it a thread is placed in the form of a loop. The film is pierced inside the loop and the thread becomes a circular loop of radius R. If the surface tension of the loop be T, then what will be the tension in the thread
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Suppose tension in thread is F, then for small part 
of thread
and 
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