A water film is made between two straight parallel wires of length 10 cm separated by 5 mm from each other. If the distance between the wires is increased by 2 mm. How much work will be done? Surface tension for water is 
a)
288 erg
b)
72 erg
c)
144 erg
d)
216 erg
A water film is made between two straight parallel wires of length 10 cm separated by 5 mm from each other. If the distance between the wires is increased by 2 mm. How much work will be done? Surface tension for water is
a)
288 erg
b)
72 erg
c)
144 erg
d)
216 erg
Question ID - 57240 | SaraNextGen Top Answer
A water film is made between two straight parallel wires of length 10 cm separated by 5 mm from each other. If the distance between the wires is increased by 2 mm. How much work will be done? Surface tension for water is
a)
288 erg
b)
72 erg
c)
144 erg
d)
216 erg
|
A water film is made between two straight parallel wires of length 10 cm separated by 5 mm from each other. If the distance between the wires is increased by 2 mm. How much work will be done? Surface tension for water is |
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|
a) |
288 erg |
b) |
72 erg |
c) |
144 erg |
d) |
216 erg |
1 Answer
127 votes
Answer Key / Explanation : (a) -
|
(a) Work done = surface tension
|
increase in area
erg127 votes
Answer Link
127