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Two wires of radii r and 2 r are welded ...

Two wires of radii `r` and `2 r` are welded together end to end . The combination is used as a sonometer wire and is kept under a tension `T`. The welded point lies midway between the bridges. The ratio of the number of loops formed in the wires , such that the joint is a node when the stationary waves are set up in the wire is

A

`1 : 2`

B

`2 : 3`

C

`3 : 4`

D

`4 : 5`

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The correct Answer is:
A
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