What is the Young's modulus of elasticity for a perfectly rigid body?
Correct answer: A. Infinity
- A. Infinity
- B. Zero
- C. Unity
- D. -1
Explanation
Young's modulus measures resistance to deformation (Strain) under Stress. A perfectly rigid body does not deform under any force, meaning its strain is zero. This results in an infinite Young's modulus.
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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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