Physics · JEE | MECHANICAL PROPERTIES OF SOLIDS

Based on the cylindrical deformation under tensile stress shown in the figure, if a cylindrical body elongates by \( \Delta L \) under tensile force, the longitudinal strain is given by:

1. A
   \( \frac{\Delta L}{L} \)
2. B
   \( \frac{L}{\Delta L} \)
3. C
   \( \Delta L \times L \)
4. D
   \( \frac{\Delta L^2}{L} \)