The possible value of Poisson's ratio is

(1) 1                                       

(2) 0.9

(3) 0.8                                     

(4) 0.4

There is no change in the volume of a wire due to change in its length on stretching. The Poisson's ratio of the material of the wire is

(1)   + 0.50                               

(2)   – 0.50

(3)   0.25                                  

(4)   – 0.25

A cylindrical wire of radius 1 mm, length 1m, Young's modulus $=2\times {10}^{11} \mathrm{N}/{\mathrm{m}}^2$, poisson's ratio $\mathrm{\mu }=\mathrm{\pi }/10$ is stretched by a force of 100 N. Its radius will become?

1.  0.99998 mm

2.  0.99999 mm

3.  0.99997 mm

4.  0.99995 mm

Practically range of Possion’s ratio $\mathrm{\sigma }$ is

1. 0.5 to 1

2. –1 to 0.5

3. 0 to 0.5

4. –0.5 to 0

The Poisson ratio cannot have value

(1) 0.7

(2) 0.2

(3) 0.1

(4) 0.5