A frame made of a metallic wire enclosing a surface area 
is covered with a soap film. If the area of the frame of metallic wire is reduced by 50%, the energy of the soap film will be changed by
a)
100%
b)
75%
c)
50%
d)
25%
A frame made of a metallic wire enclosing a surface area is covered with a soap film. If the area of the frame of metallic wire is reduced by 50%, the energy of the soap film will be changed by
a)
100%
b)
75%
c)
50%
d)
25%
Question ID - 57393 | SaraNextGen Top Answer
A frame made of a metallic wire enclosing a surface area is covered with a soap film. If the area of the frame of metallic wire is reduced by 50%, the energy of the soap film will be changed by
a)
100%
b)
75%
c)
50%
d)
25%
|
A frame made of a metallic wire enclosing a surface area |
|||||||
|
a) |
100% |
b) |
75% |
c) |
50% |
d) |
25% |
1 Answer
127 votes
Answer Key / Explanation : (c) -
|
(c) Surface energy = surface tension
New surface energy, % decrease in surface energy
|
surface area
127 votes
Answer Link
127