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ashish mishra

· started a discussion

· 1 Months ago

formula (Question: 336595.0 )

work done = surface tension * change in area(4 pai R*R)
here bubble will have two interface

Question:

Work done in blowing a soap bubble of diameter 12 cm will be. Assume the surface tension of soap solution = 0.04 N/m

Options:
A)

18.09  ×    10-4 Nm

B)

9.05  ×    10-4 Nm

C)

7.24  ×    10-3 Nm

D)

36.2  ×    10-4 Nm

Solution:

Ans: (d)

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