MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
The mean kinetic energy of one mole of gas per degree of freedom (on the basis of a kinetic theory of gases) is ___________ |
| A. | (1/2) kT |
| B. | (3/2) kT |
| C. | (3/2) RT |
| D. | (1/2) RT |
| Answer» E. | |
| 2. |
The degree of freedom in case of a monoatomic gas is ___________ |
| A. | 1 |
| B. | 3 |
| C. | 5 |
| D. | 2 |
| Answer» C. 5 | |
| 3. |
Surface the lake is at 2 C and depth of the lake is 20m. Find the temperature of the bottom of the lake? |
| A. | 2 C |
| B. | 3 C |
| C. | 4 C |
| D. | 552 C |
| Answer» E. | |
| 4. |
A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is? |
| A. | 4RT |
| B. | 9RT |
| C. | 11RT |
| D. | 15RT |
| Answer» D. 15RT | |
| 5. |
The average translational kinetic energy of O2 molecules (relative molar mass 32) at a particular temperature is 0.048eV. The translational kinetic energy of N2 molecules (relative molar mass) in eV at the same temperature is? |
| A. | 0.0015 |
| B. | 0.003 |
| C. | 0.048 |
| D. | 0.768 |
| Answer» D. 0.768 | |
| 6. |
A vessel contains one mole of O2 gas at a temperature T. The pressure of the gas is P. An identical vessel containing one hole of He gas at a temperature 2T has a pressure of? |
| A. | P/8 |
| B. | P |
| C. | 2P |
| D. | 8P |
| Answer» D. 8P | |
| 7. |
When an automobile travels for a long distance, the pressure in the gas? |
| A. | Increases slightly |
| B. | Decreases slightly |
| C. | Remains the same |
| D. | Decreases and then increases |
| Answer» B. Decreases slightly | |
| 8. |
At constant volume temperature is increases, then ___________ |
| A. | Collisions on walls will be less |
| B. | Number of collisions per unit time will increase |
| C. | Collisions will be in straight line |
| D. | Collisions will not change |
| Answer» C. Collisions will be in straight line | |
| 9. |
Assertion: In the pressure-temperature phase diagram of water, the slope of the melting curve is found to be negative.
|
| A. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | Assertion it true but the reason is false |
| D. | Both assertion and reason are false |
| Answer» C. Assertion it true but the reason is false | |