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