Question
The radii of two soap bubbles are r₁ and r₂. In isothermal conditions, two meet together in vacuum. Then the radius of the resultant bubble is given by
Options :
R = (r₁ + r₂)/2
R = r₁(r₁r₂ +r₂)
R² = r₁² + r₂²
R = r₁ + r₂
Answer :
R² = r₁² + r₂²
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