5. An axial load P is applied on a circular section of diameter D. If the same load is applied on a hollow circular shaft with inner diameter as D/2, the ratio of stress in two cases would be
A. 9?8
B. 8?3
C. 4?3
D. 1
5. An axial load P is applied on a circular section of diameter D. If the same load is applied on a hollow circular shaft with inner diameter as D/2, the ratio of stress in two cases would be
A. 9?8
B. 8?3
C. 4?3
D. 1