Poisson ratio `sigma` is a ratio of _____ to _____.

Poisson's ratio is a _____.

Define poisson's ratio and mention the range of its theoretical values.

Two wires have diameters in the ratio 1:2 , length in the ratio 3:4 and young's moduli in the ratio 2:3. What is the ratio of elongations produced in the wires if they are subjected to the same streching force ?

What is meant by radius ratio?

Two wires of the same material have their lengths in the ratio 3:2 , diameters in the ratio 3:2 and streching forces in the ratio 3:4 . What is the ratio of their extension