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

Question:

1.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

Options :

a) 0.0125 Nm^-1
b) 0.1 Nm^-1
c) 0.5 Nm^-1
d) 0.025 Nm^-1

Answer :

d) 0.025 Nm^-1

Answer Steps :

Solution :-

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