Two seperate soap bubbles of radii 3 \\times 10^{-3} {m} and 2 \\times10^{-3} {m} respectively, formed of same liquid (surface tension 6.5 \\times10^{-2} {N} \/ {m} ) come together to form a double bubble. The radius of interface of double bubble is

BITSAT 2019 Slot 2 Solved Paper

Section: Physics

Question : 2 of 150

Marks: +1, -0

Two seperate soap bubbles of radii 3×10−3m and 2×10−3m respectively, formed of same liquid (surface tension 6.5×10−2N∕m ) come together to form a double bubble. The radius of interface of double bubble is

6×10−3m
4×10−3m
15×10−3m
0.66×10−3m

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