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COMEDK2025PhysicsMechanical Properties of SolidsActual

Select the correct statement from the following:

Options

  1. AThe bulk modulus of an ideal liquid is zero
  2. BRubber is more elastic than steel
  3. CShear modulus of an ideal liquid is infinite
  4. DThe bulk modulus of a perfect rigid body is infinite

Correct answer

D. The bulk modulus of a perfect rigid body is infinite

Step-by-step solution

The bulk modulus B is defined as B = -V dP dV . For a perfectly rigid body, the change in volume dV is zero for any applied pressure dP . Thus, B = -V dP 0 = . Regarding other options: The bulk modulus of an ideal liquid is finite and positive, not zero. Steel is more elastic than rubber because the Young's modulus of steel is much higher than that of rubber, meaning it requires more stress to produce the same strain. The shear modulus of an ideal liquid is zero because it cannot sustain any shear stress. Answer: T

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