Q.29: A wire of length (L) and radius (r) is loaded with a weight (Mg). If (Y) and (o) denote the Young's modulus and Poisson's ratio of the material of the wire respectively, then the change in the radius of the wire is given by : (CET-2009) (a) (c) Ar = Ar = σπι Mgr Mgo nry (b) Ar: (d) Ar= Mgr πσY MgY Tro

Q.29: A wire of length (L) and radius (r) is loaded with a weight (Mg). If (Y) and (o) denote the Young's modulus and Poisson's ratio of the material of the wire respectively, then the change in the radius of the wire is given by : (CET-2009) (a) (c) Ar = Ar = σπι Mgr Mgo nry (b) Ar: (d) Ar= Mgr πσY MgY Tro