What is the Young's modulus of elasticity for a perfectly rigid body?
Correct answer: A. Infinity
- A. Infinity
- B. Zero
- C. 1
- D. -1
Explanation
Young's modulus measures the stiffness or rigidity of a material, but it doesn't apply to perfectly rigid bodies, and its value does not extend to infinity. Since strain is zero therefore Y is infinite.
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About Physics of Solids
Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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