A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5 \times 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 [AIEEE 2012]

Correct Answer is : 0.025Nm−1

AIEEE 2012 Solved Paper

Section: Physics

Question : 38 of 89

Marks: +1, -0

A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 1.5×10−2N (see figure). The length of the slider is 30‌cm and its weight negligible. The surface tension of the liquid film is

[AIEEE 2012]

0.0125Nm−1
0.1Nm−1
0.05Nm−1
0.025Nm−1

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