engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Fluids Surface tension
A water film is made between two straight parallel wires of length 10 cm each and at a distance of 0.5 cm from each other. If the distance between the wire is increased by 1 mm, how much work will be done? Surface tension of water = 72 dynes/cm
1
288 ergs
2
72 ergs
3
144 ergs
4
216 ergs