MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The temperature of a given mass is increased from 27°C to 327°C. The rms velocity of the molecules increases ___________ |
| A. | √2 times |
| B. | 2 times |
| C. | 2√2 times |
| D. | 4 times |
| Answer» B. 2 times | |
| 2. |
Statement: The ration Cp/Cv is more for helium gas than that for hydrogen gas. |
| A. | Reason: Atomic mass of helium is more than that of hydrogen. |
| B. | Both statement and reason are true and the reason is the correct explanation of the statement |
| C. | Both statement and reason are true but the reason is not a correct explanation of the statement |
| D. | Statement it true but the reason is false |
| E. | Both statement and reason are false |
| Answer» B. Both statement and reason are true and the reason is the correct explanation of the statement | |
| 3. |
When we heat a gas-sample from 27°C to 327°C, then the initial average kinetic energy of the molecules was E. What will b the average kinetic energy? |
| A. | 327E |
| B. | 300E |
| C. | 2E |
| D. | √2E |
| Answer» D. √2E | |