MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is used to measure pressure? |
| A. | Ammeter |
| B. | Speedometer |
| C. | Barometer |
| D. | Voltmeter |
| Answer» D. Voltmeter | |
| 2. |
The SI unit of pressure is _____ |
| A. | Newton |
| B. | Joule |
| C. | Pascal |
| D. | Watt |
| Answer» D. Watt | |
| 3. |
From which of the following is the working of hydraulic machines based on? |
| A. | Pascal’s Law |
| B. | Newton’s Law of Cooling |
| C. | Law of Gravitation |
| D. | Ideal Gas Law |
| Answer» B. Newton’s Law of Cooling | |
| 4. |
What is Pascal’s Law? |
| A. | For every action, there is an equal and opposite reaction |
| B. | Force is the time rate of change of momentum |
| C. | For an ideal gas, the pressure is directly proportional to temperature and constant volume and mass |
| D. | A pressure change at any point in the fluid is transmitted throughout the fluid such that the same change occurs everywhere |
| Answer» E. | |
| 5. |
Pascal’s Law is valid only for _____ |
| A. | water |
| B. | metals |
| C. | fluids |
| D. | gases |
| Answer» D. gases | |
| 6. |
3 containers A, B, C are filled with water as shown in the figure. What is the relation between the pressures at 1, 2, 3? Assume that all jars are stationery. |
| A. | 1:1:1 |
| B. | 1:2:3 |
| C. | 3:2:1 |
| D. | 1:2:1 |
| Answer» B. 1:2:3 | |
| 7. |
A force F is applied in a cross-sectional area as shown. The value of F is 20 N and the value of A is 2 m2. Find the pressure on the surface. |
| A. | 20 Pa |
| B. | 40 Pa |
| C. | 5 Pa |
| D. | 10 Pa |
| Answer» D. 10 Pa | |
| 8. |
A force is applied on a cube of side 3m. Another force, double the magnitude of the previous force is applied on a cube of 1m. What is the ratio of pressure on the first cube (P) to the pressure on the second cube (P’)? |
| A. | 1/9 |
| B. | 18 |
| C. | 1/18 |
| D. | 1/2 |
| Answer» D. 1/2 | |
| 9. |
A force F is applied on a uniform rod of cross-section A and a force F’ is applied on a uniform rod of cross-section 3A. What is the relation between F and F’ if the pressure on both is the same? |
| A. | F/F’ = 1/3 |
| B. | F/F’ = 3 |
| C. | F’/F = 1/3 |
| D. | F/F’ = 1/9 |
| Answer» B. F/F’ = 3 | |
| 10. |
Pressure decreases when _____ |
| A. | only the force is increased but not the area |
| B. | only the area is decreases but not the force |
| C. | either area decreases or force increases |
| D. | the force decreases and/or area increases |
| Answer» E. | |
| 11. |
When the area decreases _____ |
| A. | pressure increases |
| B. | pressure decreases |
| C. | pressure remains constant |
| D. | the change in pressure cannot be determined |
| Answer» B. pressure decreases | |