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Stress and Strain Multiple Questions and Answers.
| 1. | If the stress is S and the Young’s modulus is Y of material of a wire, the energy stored in the wire per unit volume is? | ||
| A. | 2Y/S | ||
| B. | S/2Y | ||
| C. | 2S2 Y | ||
| D. | S2/ 2Y | ||
| 2. | An example of a perfectly plastic body is? | ||
| A. | Quartz | ||
| B. | Crystal | ||
| C. | Putty | ||
| D. | Rubber | ||
| 3. | A given quantity if an ideal gas is at pressure P and absolute temperature T. What is the isothermal bulk modulus of the gas? | ||
| A. | 2P/3 | ||
| B. | P | ||
| C. | 3P/2 | ||
| D. | 2P | ||
| 4. | A wire fixed at the upper end stretches by length l by applying a force F. What is the work done in stretching? | ||
| A. | F/2l | ||
| B. | Fl | ||
| C. | 2Fl | ||
| D. | Fl/2 | ||
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