Young modulus for the perfectly rigid body is
Correct answer: C. infinity
- A. 1
- B. 0
- C. infinity
- D. 40
Explanation
Young's modulus (E) is a measure of a material's stiffness. It is defined as the ratio of stress (σ) to strain (ε):E = σ/εA perfectly rigid body does not deform under any applied stress. This means that the strain is always zero, regardless of the stress. Therefore, the Young's modulus of a perfectly rigid body 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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