Two soap bubbles of radii 3 mm and 4 mm confined in vacuum coalesce isothermally to form a new bubble. The radius of the bubble formed in mm is

Question

Two soap bubbles of radii 3 mm and 4 mm confined in vacuum coalesce isothermally to form a new bubble. The radius of the bubble formed in mm is, 3, 4, 5, 7

MARKS App · Accepted Answer

P 1 V 1 + P 2 V 2 = P V P 1 - 0 = 4 S R 1 ⇒ P 1 R 1 = 4 S Similarly P 2 R 2 = 4 S = P R P 1 4 3 π R 1 3 + P 2 4 3 π R 2 3 = P 4 3 π R 3 R 1 2 + R 2 2 = R 2 R = 5 mm

Search any question & find its solution

Looking for more such questions to practice?