In above problem, if Poiddon's ratio is `sigma =0.1` .Find the change in diameter.

A uniform wire of length 10 m and diameter 0.6 mm is stretched by 6 mm with certain force. If the Poisson's ratio of the material of the wire is 0.3, then the change in diameter of the wire is

In the above problem No. 96, if angle turned is 270^(@) then the change in velocity will be