1. Poisson’s Ratio is applicable to –
- Solid only
- Gas only
- Liquid only
- All of these
2. The restoring force per unit area is known as-
- strain
- elasticity
- stress
- None of these
3. The ratio of stress to strain is called-
- Frictional coefficient
- Elastic constant
- Coefficient of viscosity
- Surface tension
4. Unit of Stress is
- Nm⁻¹
- Nm
- Nm⁻²
- Nm⁻³
5. The dimensional formula of stress is-
- [ML⁻¹T⁻²]
- [M°L°T°]
- [MLT⁻¹]
- [MLT⁻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
7. Substances which can be stretched to cause large strain are called-
- Isomers
- Elastomers
- Plastomers
- Polymers
8. The ratio of stress and strain is called-
- surface tension
- modulus of elasticity
- coefficient of friction
- coefficient of viscosity
9. The ratio of tensile and longitudinal strain is called–
- young’s modulus
- modulus of elasticity
- bulk modulus
- None of these
10. The ratio of shearing stress to the shearing strain is defined as-
- Young’s Modulus
- Bulk Modulus
- Shear Modulus
- Compressibility
11. The Shear modulus is also known as-
- Bulk Modulus
- Young’s Modulus
- Modulus of Rigidity
- Poisson’s Ratio
12. Stress is a …. quantity.
- vector
- dimensionless
- scalar
- tensor
13. The internal restoring force per unit area is called-
- tensile stress
- hydraulic stress
- None of these
- shearing stress
14. The reciprocal of the bulk modulus is called-
- compressibility
- bulk modulus
- young’s modulus
- None of these
15. The unit of modulus of the coefficient is-
- N/m
- N/m²
- Nm²
- None of these
16. Which of the following is more elastic?
- Glass
- Sponge
- Steel
- Rubber
17. Out of the following, which is the most plastic material?
- Rubber
- Iron
- Wood
- Plasticine
18. Solids which break above the elastic limit are called
- Ductile
- Elastic
- Brittle
- Malleable