MCQ
A rubber cord $10 m$ long is suspended vertically. How much does it stretch under its own weight (Density of rubber is $1500 kg / m , Y=$ $5 \times 10^{\circ} N / m , g =10 m / s$ )
- ✓$15 \times 10^{-4} m$
- B$7.5 \times 10^{-6} m$
- C$12 \times 10^{-9} m$
- D$25 \times 10^{-7}m$
