A wire of length `2L`, is made by joining two wires `A` and `B` of same length but different radii `r` and `2r` and made of the same material. It is vibrating at a frequency such that the joint of the two wires forms a node. If the number of antionodes in wire `A` is P and that in `B` is `q` then the ratio `p:q` is:
