11 grade physics others> Young's modulus of perfectly rigid body m...
Young's modulus of perfectly rigid body material is:
A) Infinite
B) Zero
C) 10 × 10¹⁰ N/m²
D) 1 × 10¹⁰ N/m²
1 AnswersThe correct answer is B. Zero.
Young's modulus is a measure of the stiffness or elasticity of a material. It quantifies the amount of stress required to produce a certain amount of strain in a material. A material with a higher Young's modulus is stiffer and less deformable under stress.
However, a perfectly rigid body material does not deform at all when subjected to stress. It means that it has infinite stiffness and no strain is produced regardless of the magnitude of the stress applied. Therefore, the Young's modulus of a perfectly rigid body material is considered to be zero.
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