Two spherical soap bubbles of radii 
and 
in vacuum coalesce under isothermal conditions. The resulting bubble has a radius given by
a)
b)
c)
d)
Two spherical soap bubbles of radii and in vacuum coalesce under isothermal conditions. The resulting bubble has a radius given by
a)
b)
c)
d)
Question ID - 57511 | SaraNextGen Top Answer
Two spherical soap bubbles of radii and in vacuum coalesce under isothermal conditions. The resulting bubble has a radius given by
a)
b)
c)
d)
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Two spherical soap bubbles of radii |
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (c) -
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(c) Since, the bubbles coalesce in vacuum and there is no change in temperature, hence its surface energy does not change. This means that the surface area remains unchanged. Hence,
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or 
127 votes
Answer Link
127