Modulus of rigidity of a liquid
Correct answer: D. Cannot be predicted
- A. Non zero constant
- B. Infinite
- C. Zero
- D. Cannot be predicted
Explanation
The modulus of rigidity, also known as shear modulus, is a property that measures a material's ability to withstand shear stress. It is applicable to solids, where deformation under shear stress can be measured. However, liquids cannot sustain shear stress; they flow instead of deforming elastically. Therefore, the concept of modulus of rigidity does not apply to liquids, and it cannot be predicted. Options A, B, and C are incorrect because they attempt to apply a concept to a state of matter where it does not hold.
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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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