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)
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)
Question ID - 56998 | SaraNextGen Top Answer
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)
|
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
Answer Key / Explanation : (d) -
(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
Answer Link
127