46. A rod of uniform cross-sectional area \( 10 mm^{2} \), weighing 5 kg and length 2 m is suspended vertically from a fixed support. What is the elongation produced in the rod? (Young's modulus for rod \( =2 \times 10^{11} N / m ^{2} \) ) (1) \( 50 \times 10^{-6} m \) (2) \( 10^{-4} m \) (3) \( 15 \times 10^{-6} m \) (4) \( 25 \times 10^{-6} m \)

Question

46. A rod of uniform cross-sectional area \( 10 mm^{2} \), weighing 5 kg and length 2 m is suspended vertically from a fixed support. What is the elongation produced in the rod? (Young's modulus for rod \( =2 \times 10^{11} N / m ^{2} \) ) (1) \( 50 \times 10^{-6} m \) (2) \( 10^{-4} m \) (3) \( 15 \times 10^{-6} m \) (4) \( 25 \times 10^{-6} m \)