MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is an effective coolant? |
| A. | Oil |
| B. | Mercury |
| C. | Water |
| D. | Acids |
| Answer» D. Acids | |
| 2. |
The temperature of a body can be negative on the Kelvin scale. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Two thermometers are constructed in the same way except that one has a spherical bulb and the other an elongated cylindrical bulb. Which of the two will respond quickly to temperature changes? |
| A. | Spherical bulb |
| B. | Elongated cylindrical bulb |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» B. Elongated cylindrical bulb | |
| 4. |
A green glass heated in a furnace when taken out in dark glows red. |
| A. | False |
| B. | True |
| Answer» C. | |
| 5. |
What happens when you heat china having some dark paintings engraved on it at 1000 C and then examine it in a dark room immediately? |
| A. | The dark painting will appear much brighter |
| B. | The whole china dish will be bright |
| C. | The china dish doesn t glow |
| D. | The china dish will develop patterns |
| Answer» B. The whole china dish will be bright | |
| 6. |
The outer ends of two bars A and B are at 100 C and 50 respectively. Calculate the temperature at the welded joint if they have the same cross-section and the same length and their thermal conductivities are in the ratio of A:B = 7:5. |
| A. | 79.166 C |
| B. | 80.548 C |
| C. | 20.157 C |
| D. | 58.147 C |
| Answer» B. 80.548 C | |
| 7. |
When one end of the rod is heated, the molecules at the hot end vibrate with higher amplitude and transmit the heat from one particle to the adjacent particle and so on. What is the process? |
| A. | Convection |
| B. | Conduction |
| C. | Radiation |
| D. | Transmittance |
| Answer» C. Radiation | |