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Three concentric wires of radii a,b and ...

Three concentric wires of radii a,b and c contain two different liquid films of surface tension `T_1 and T_2` respectively , as shown in the figure. The outermost and the innermost wires are fixed. The tension in the middle wire is (neglect the effect of gravity)

A

`(T_1-T_2)b`

B

`2(T_1-T_2)b`

C

`(T_1-T_2)c`

D

`2T_1b`

Text Solution

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The correct Answer is:
B
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