Surface tension of a solution is 30 x 10⁻² N/m. The radius of the soap bubble is 5 cm

Surface tension of a solution is 30 x 10⁻² N/m. The radius of the soap bubble is 5 cm. The surface energy of soap bubble is

Options

(a) 1.8 x 10 J
(b) 1.8 x 10² J
(c) 1.8 x 10⁻¹ J
(d) 1.8 x 10⁻² J

Correct Answer:

1.8 x 10⁻² J

Explanation:

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