Acircular rod of 100mm diameter and 500mm length is subjected to a tensile force of 1000KN. Determine the modulus of rigidity (G) if $$E = 2 \times 10^5 N/mm^2$$ and Poisson’s = 0.3

A

$$0.335 \times 10^5 N/mm^2$$

B

$$0.521 \times 10^5 N/mm^2$$

C

$$0.7692 \times 10^5 N/mm^2$$

D

$$0.2256 \times 10^5 N/mm^2 0$$