NEET Physics: modulus of rigidity Practice Questions
15 free multiple-choice questions on modulus of rigidity (Properties of Solids and Liquids) for NEET Physics, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more NEET questions in the app →Q1. The Modulus of Rigidity is a measure of the material's resistance to which type of deformation?
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Correct answer: C — Shear deformation
The Modulus of Rigidity specifically measures the material's resistance to shear deformation (angular deformation).
Q2. A material with a very high modulus of rigidity is generally characterized as being:
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Correct answer: C — Rigid and resistant to twisting
A high modulus of rigidity indicates that the material strongly resists shearing deformation, making it very rigid and difficult to twist or shear.
Q3. If a material is subjected to a shear stress, the resulting angular deformation per unit shear stress is directly related to which property of the material?
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Correct answer: D — Modulus of Rigidity
The modulus of rigidity quantifies the material's resistance to changes in shape (shear deformation) when subjected to tangential forces (shear stress).
Q4. Young's Modulus of Elasticity is defined as the ratio of:
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Correct answer: A — Stress to strain
Young's Modulus (Y) is mathematically defined as the ratio of tensile stress (σ) to longitudinal strain (ε); i.e., Y = σ/ε.
Q5. The modulus of rigidity is fundamentally related to the ratio of which two physical quantities?
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Correct answer: C — Shear stress and shear strain
The modulus of rigidity (or shear modulus) is the ratio of shear stress applied to a material to the resulting shear strain experienced by the material.
Q6. If the shear strain is doubled while keeping the material temperature constant, what happens to the shear stress applied?
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Correct answer: B — It is doubled
Since shear stress is directly proportional to shear strain (τ= Gγ), if the shear strain is doubled, the shear stress applied must also be doubled.
Q7. In relation to stress-strain behavior, how does the modulus of rigidity relate to the resistance to angular deformation in a solid body?
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Correct answer: C — It is directly proportional to the resistance to angular deformation
The modulus of rigidity is a measure of the material's resistance to shear deformation; thus, a higher value implies greater resistance to angular deformation.
Q8. The property of a material that measures its resistance to shearing deformation is known as:
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Correct answer: C — Modulus of Rigidity
The modulus of rigidity (or shear modulus, G) is the specific measure of a material's resistance to shear stress.
Q9. If a material has a very high Modulus of Rigidity, what does it imply about the material?
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Correct answer: C — It is very rigid and resists shearing
A high modulus of rigidity indicates that the material strongly resists shear deformation, meaning it is very rigid.
Q10. Which of the following statements correctly describes the elastic behavior of a solid material?
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Correct answer: D — It obeys Hooke's law within the elastic limit
Within the elastic limit, the material obeys Hooke's law, meaning stress is directly proportional to strain, which defines the modulus of rigidity.
Q11. Which physical quantity is used to calculate the modulus of rigidity of a material?
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Correct answer: A — Density of the material
The modulus of rigidity is calculated by dividing the uniaxial stress developed in the material by the resulting uniaxial strain.
Q12. When a constant force is applied to a cross-section, the resulting change in length is known as the strain. This change in length is directly related to which property of the material?
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Correct answer: C — Young's Modulus
The change in length (strain) is directly related to the material's stiffness, quantified by Young's Modulus.
Q13. Which physical quantity is the mathematical representation of shear stress?
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Correct answer: B — Force acting perpendicular to the surface divided by area
Shear stress (τ) is defined as the tangential force acting across a cross-sectional area.
Q14. If a material has a high modulus of rigidity, what does this imply about its resistance to deformation?
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Correct answer: B — It offers high resistance to elastic deformation
A high modulus of rigidity indicates that the material strongly resists elastic deformation (stretching or shearing) when a force is applied.
Q15. The modulus of rigidity of a material is the ratio of which two quantities?
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Correct answer: A — Stress and Strain
The modulus of rigidity (Young's Modulus) is defined as the ratio of the applied shear stress to the resulting shear strain. It measures the stiffness or resistance of an elastic material to shearing deformation.
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