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Elastic Limit Multiple Questions and Answers.
| 6. | If in a wire of Young’s modulus Y, longitudinal strain is produced, then the value of potential energy stored in its unit volume will be? | ||
| A. | YX2 | ||
| B. | YX2 | ||
| C. | 2YX2 | ||
| D. | 0.5YX2 | ||
| 7. | A stretched rubber has? | ||
| A. | Increased kinetic energy | ||
| B. | Increased potential energy | ||
| C. | Decreased kinetic energy | ||
| D. | Decreased potential energy | ||
| 8. | The breaking stress of a wire depends upon? | ||
| A. | Length of the wire | ||
| B. | Radius of the wire | ||
| C. | Material of the wire | ||
| D. | Shape of the cross-section | ||
| 9. | Which of the following affects the elasticity of a substance? | ||
| A. | Hammering and annealing | ||
| B. | Change in temperature | ||
| C. | Impurity in substance | ||
| D. | All of the mentioned | ||
| 10. | The diameter of brass rod is 4mm. Young’s modulus of brass is 9×109 N/m2. The force required to stretch 0.1% of its length is? | ||
| A. | 360Ï€N | ||
| B. | 36N | ||
| C. | 36π×105 N | ||
| D. | 144π×103N | ||
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