Common question in fluids

Classical Mechanics Level 3

Two soap bubbles of radii 3 c m 3~cm and 2 c m 2~cm come in contact and sticks to each other. The radius of curvature of common surface in c m cm is

3 6 5 4

Tanishq Varshney by Tanishq Varshney , 23, India

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2 solutions

Karan Shekhawat
Apr 4, 2015

how much do you got Tanishq ? in JEE_MAINS 2015

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Let us take bubble1 of rad=3 cm Bubble2 " " =2 cm Then, P1-P0=4s÷3 (1) P2-P0=4s÷2=2s (2) subtracting 1 from 2 P2-P1=2s÷3 (3) But also P2-P1=4s÷r (4) equating 3&4 We get r=6♥♡♥♡

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