If the work done in blowing a bubble of volume V is W, then the work done in blowing a soap bubble of volume 2V will be |
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a) |
W |
b) |
2W |
c) |
d) |

If the work done in blowing a bubble of volume V is W, then the work done in blowing a soap bubble of volume 2V will be |
|||||||

a) |
W |
b) |
2W |
c) |
d) |

1 Answer

127 votes

**(d)**

We know that surface tension is related to work as

Since, surface area of sphere is

and there are two free surfaces, we have

From Eqs. (i) and (ii), we get

127 votes

127