A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5 × 10 –2 N (see figure). The length of the slider is 30 cm and its weight negligible. The surface tension of the liquid film is:
Text Solution
Verified by ExpertsThe correct answer is:
D
2TL = mg
T = 
= 0.025 N/m
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