The compressibility of a material is
Correct answer: C. The fractional change in volume per unit change in pressure
- A. Product of volume and its pressure
- B. The change in pressure per unit change in volume strain
- C. The fractional change in volume per unit change in pressure
- D. None of the above
Explanation
Compressibility is a measure of how much the volume of a material decreases under pressure. It is defined as the fractional change in volume per unit change in pressure, which is why Option C is correct. Option A confuses compressibility with a thermodynamic property, while Option B describes the bulk modulus, which is the reciprocal of compressibility. Option D is incorrect because a correct definition is provided.
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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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