JAC Class 11 Physics MCQ Chapter-8: Mechanical Properties of Solids

1. Poisson’s Ratio is applicable to –

  • Solid only
  • Gas only
  • Liquid only
  • All of these
Answer
Solid only

2. The restoring force per unit area is known as-

  • strain
  • elasticity
  • stress
  • None of these
Answer
stress

3. The ratio of stress to strain is called-

  • Frictional coefficient
  • Elastic constant
  • Coefficient of viscosity
  • Surface tension
Answer
Elastic constant

4. Unit of Stress is

  • Nm⁻¹
  • Nm
  • Nm⁻²
  • Nm⁻³
Answer
Nm⁻²

5. The dimensional formula of stress is-

  • [ML⁻¹T⁻²]
  • [M°L°T°]
  • [MLT⁻¹]
  • [MLT⁻²]
Answer
[ML⁻¹T⁻²]

6. According to Hooke’s Law of Elasticity, if stress is increased, the ratio of stress to strain-

  • decreases
  • becomes zero
  • increases
  • remains constant
Answer
remains constant

7. Substances which can be stretched to cause large strain are called-

  • Isomers
  • Elastomers
  • Plastomers
  • Polymers
Answer
Elastomers

8. The ratio of stress and strain is called-

  • surface tension
  • modulus of elasticity
  • coefficient of friction
  • coefficient of viscosity
Answer
modulus of elasticity

9. The ratio of tensile and longitudinal strain is called–

  • young’s modulus
  • modulus of elasticity
  • bulk modulus
  • None of these
Answer
young’s modulus

10. The ratio of shearing stress to the shearing strain is defined as-

  • Young’s Modulus
  • Bulk Modulus
  • Shear Modulus
  • Compressibility
Answer
Shear Modulus

11. The Shear modulus is also known as-

  • Bulk Modulus
  • Young’s Modulus
  • Modulus of Rigidity
  • Poisson’s Ratio
Answer
Modulus of Rigidity

12. Stress is a …. quantity.

  • vector
  • dimensionless
  • scalar
  • tensor
Answer
tensor

13. The internal restoring force per unit area is called-

  • tensile stress
  • hydraulic stress
  • None of these
  • shearing stress
Answer
hydraulic stress

14. The reciprocal of the bulk modulus is called-

  • compressibility
  • bulk modulus
  • young’s modulus
  • None of these
Answer
compressibility

15. The unit of modulus of the coefficient is-

  • N/m
  • N/m²
  • Nm²
  • None of these
Answer
N/m²

16. Which of the following is more elastic?

  • Glass
  • Sponge
  • Steel
  • Rubber
Answer
Steel

17. Out of the following, which is the most plastic material?

  • Rubber
  • Iron
  • Wood
  • Plasticine
Answer
Plasticine

18. Solids which break above the elastic limit are called

  • Ductile
  • Elastic
  • Brittle
  • Malleable
Answer
Brittle

These JAC MCQs for class 11 Physics will help students prepare for the board exam. For more study materials, such as solutions, model papers, syllabus, MCQ Questions, and the latest updates on the JAC Board, please visit our website at JACBoardSolutions.com.

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