A force of 1 N doubles the length of a cord having cross-sectional area 1 mm2. The Young’s modulus of the material of cord is
A. 1 N m-2
B. 0.5 × 106 N m-2
C. 106 N m-2
D. 2 × 106 N m-2
Answer:C
A force of 1 N doubles the length of a cord having cross-sectional area 1 mm2. The Young’s modulus of the material of cord is
A. 1 N m-2 B. 0.5 × 106 N m-2 C. 106 N m-2 D. 2 × 106 N m-2