Compressibility is the reciprocal of -
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A.
Bulk modulus of elasticity
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B.
Rigidity Modulus of elasticity
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C.
Shear modulus of elasticity
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D.
Young's modulus of elasticity
Correct Answer:
A. Bulk modulus of elasticity
Explanation:
Compressibility is defined as the reciprocal of the bulk modulus of elasticity. It represents a material's ability to reduce in volume when subjected to uniform external pressure. Mathematically, while the bulk modulus measures a substance's resistance to compression, compressibility quantifies its responsiveness to that same pressure. Therefore, a material with a high bulk modulus is highly resistant to volume changes and has low compressibility, whereas a material that is easily compressed possesses a low bulk modulus.
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