Young's modulus is a proportionality constant that relates the force per unit area applied perpendicularly at the surface of an object to
Correct answer: C. the fractional change in length
- A. the shear
- B. the fractional change in volume
- C. the fractional change in length
- D. the pressure
Explanation
Young's modulus (E) is a measure of the stiffness of a material and is defined as the ratio of stress to strain in the linear elastic region. It relates the force per unit area applied perpendicularly to the surface of an object to the fractional change in length along the direction of the applied force.
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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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