Answer: Youngs modulus (for most solids, comparable to or greater than shear modulus).
- A Shear modulus, which is generally smaller than Young's modulus for the same solid
- B Bulk modulus for gases, which is far smaller than for any solid
- C Youngs modulus (for most solids, comparable to or greater than shear modulus)
- D Poissons ratio, which is a dimensionless number under 0.5
Correct answer: C. Youngs modulus (for most solids, comparable to or greater than shear modulus)
Explanation: For most solids, Youngs modulus Y is typically larger than the shear modulus G, while gases have a very small bulk modulus by comparison.
A typical stress-strain curve: the initial straight line (Hooke's Law region, slope = Young's modulus) ends at the elastic limit; beyond the yield point, deformation becomes permanent, peaking at the ultimate tensile strength before the wire finally fractures.
Concept context
Stress, strain, Hookes law, and the elastic moduli that describe how solids deform and recover under load.