MCQOPTIONS
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MCQOPTIONS
This section includes 24 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. |
A body of mass 15kg is dropped into the water. If the apparent weight of the body is 107N, then the applied thrust will be ___________ |
| A. | 40 N |
| B. | 80 N |
| C. | 60 N |
| D. | 100 N |
| Answer» B. 80 N | |
| 2. |
Assertion: Smaller drops of liquid resist deforming forces better than the larger drops.Reason: Excess pressure inside a drop is directly proportional to its surface area. |
| 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 the correct explanation of the assertion |
| C. | Assertion is true but the reason is false |
| D. | Assertion and reason is false |
| Answer» D. Assertion and reason is false | |
| 3. |
The velocity of efflux of a liquid through an orifice in the bottom of the tank does not depend upon ___________ |
| A. | Size of orifice |
| B. | Height of liquid |
| C. | Acceleration due to gravity |
| D. | Quantity |
| Answer» B. Height of liquid | |
| 4. |
The rate of flow of liquid through an orifice of a tank does not depend upon ___________ |
| A. | The size of the orifice |
| B. | Density of liquid |
| C. | The height of fluid column |
| D. | Acceleration due to gravity |
| Answer» E. | |
| 5. |
An aeroplane gets its upward lift due to a phenomenon described by the ___________ |
| A. | Archimedes’ principle |
| B. | Bernoulli’s principle |
| C. | Buoyancy principle |
| D. | Pascal law |
| Answer» C. Buoyancy principle | |
| 6. |
A steel ball is dropped in oil, then ___________ |
| A. | The ball attains constant velocity after sometime |
| B. | The ball stops |
| C. | The speed of ball will keep on increasing |
| D. | The speed of the ball will decrease |
| Answer» B. The ball stops | |
| 7. |
Critical velocity of the liquid ___________ |
| A. | Decrease when radius decreases |
| B. | Increases when radius increases |
| C. | Decreased when density increases |
| D. | Increases when density increases |
| Answer» D. Increases when density increases | |
| 8. |
Motion of a liquid in a tube is best described by ___________ |
| A. | Bernoulli theorem |
| B. | Poiseuille’s equation |
| C. | Stoke’s law |
| D. | Archimedes’ principle |
| Answer» C. Stoke’s law | |
| 9. |
It is easier to swim in sea water than in river water. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
At what speed will the velocity head of stream of water be 40 cm? |
| A. | 2.80cms-1 |
| B. | 280 cms-1 |
| C. | 28 cms-1 |
| D. | 0.280 cms-1 |
| Answer» C. 28 cms-1 | |
| 11. |
A metal plate 5cm×5cm rest on a layer of castor oil 1mm thick whose coefficient of viscosity is 1.55Nsm(-2). Find the horizontal force required to move the plate with a speed of 2 cms(-1). |
| A. | 0.775N |
| B. | 0.0577N |
| C. | 0.0775N |
| D. | 0.577N |
| Answer» D. 0.577N | |
| 12. |
AN_AEROPLANE_GETS_ITS_UPWARD_LIFT_DUE_TO_A_PHENOMENON_DESCRIBED_BY_THE?$ |
| A. | Archimedes’ principle |
| B. | Bernoulli’s principle |
| C. | Buoyancy principle |
| D. | Pascal law |
| Answer» C. Buoyancy principle | |
| 13. |
The velocity of efflux of a liquid through an orifice in the bottom of the tank does not depend upon$ |
| A. | Size of orifice |
| B. | Height of liquid |
| C. | Acceleration due to gravity |
| D. | Quantity |
| Answer» B. Height of liquid | |
| 14. |
The_rate_of_flow_of_liquid_through_an_orifice_of_a_tank_does_not_depend_upon$ |
| A. | The size of the orifice |
| B. | Density of liquid |
| C. | The height of fluid column |
| D. | Acceleration due to gravity |
| Answer» E. | |
| 15. |
A body of mass 15kg is dropped into the water. If the apparent weight of the body is 107N, then the applied thrust will be |
| A. | 40 N |
| B. | 80 N |
| C. | 60 N |
| D. | 100 N |
| Answer» B. 80 N | |
| 16. |
Assertion:_Smaller_drops_of_liquid_resist_deforming_forces_better_than_the_larger_drops |
| A. | None of these |
| B. | Both assertion and reason are true and the reason is the correct explanation of the assertion |
| C. | Both assertion and reason are true but the reason is not the correct explanation of the assertion |
| Answer» D. | |
| 17. |
A steel ball is dropped in oil, the? |
| A. | The ball attains constant velocity after sometime |
| B. | The ball stops |
| C. | The speed of ball will keep on increasing |
| D. | The speed of the ball will decrease |
| Answer» B. The ball stops | |
| 18. |
Critical velocity of the liquid |
| A. | Decrease when radius decreases |
| B. | Increases when radius increases |
| C. | Decreased when density increases |
| D. | Increases when density increases |
| Answer» D. Increases when density increases | |
| 19. |
Motion of a liquid in a tube is best described by |
| A. | Bernoulli theorem |
| B. | Poiseuille’s equation |
| C. | Stoke’s law |
| D. | Archimedes’ principle |
| Answer» C. Stoke‚Äö√Ñ√∂‚àö√ë‚àö¬•s law | |
| 20. |
If there were no gravity, which of the following will not be there for a fluid? |
| A. | Viscosity |
| B. | Surface tension |
| C. | Pressure |
| D. | Archimedes’ upward thrust |
| Answer» E. | |
| 21. |
It is easier to swim in sea water than in river water. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 22. |
It is easier to cut an apple with a blunt knife than a sharp knife. |
| A. | True |
| B. | False |
| Answer» C. | |
| 23. |
At what speed will the velocity head of stream of water be 40 cm? |
| A. | 2.80cms<sup>-1</sup> |
| B. | 280 cms<sup>-1</sup> |
| C. | 28 cms<sup>-1</sup> |
| D. | 0.280 cms<sup>-1</sup> |
| Answer» C. 28 cms<sup>-1</sup> | |
| 24. |
A metal plate 5cm√ó5cm rest on a layer of castor oil 1mm thick whose coefficient of viscosity is 1.55Nsm(-2). Find the horizontal force required to move the plate with a speed of 2 cms(-1). |
| A. | 0.775N |
| B. | 0.0577N |
| C. | 0.0775N |
| D. | 0.577N |
| Answer» D. 0.577N | |