MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 50 Mcqs, each offering curated multiple-choice questions to sharpen your VITEEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Work done by an elevator is 1500 J with a constant force of 150 N, distance covered by elevator is |
| A. | 1350 m |
| B. | 1650 m |
| C. | 225000 m |
| D. | 10 m |
| Answer» E. | |
| 2. |
Pendulum bob cannot attain its initial height because |
| A. | it continues to lose energy in thermal form |
| B. | it continues to lose energy in sound form |
| C. | it continues to lose energy in light form |
| D. | it continues to lose energy in potential form |
| Answer» B. it continues to lose energy in sound form | |
| 3. |
When a pendulum bob is displaced to one side, it gains |
| A. | Chemical Potential Energy |
| B. | Elastic Potential Energy |
| C. | Gravitational Potential Energy |
| D. | Kinetic energy |
| Answer» D. Kinetic energy | |
| 4. |
A constant force on an object given by product of force and distance moved by object in direction of force is termed as |
| A. | Work done |
| B. | Efficiency |
| C. | Power |
| D. | Energy |
| Answer» B. Efficiency | |
| 5. |
Formula for work done is |
| A. | F × s, where F is force and s is displacement |
| B. | F/s, where F is force and s is displacement |
| C. | F + s, where F is force and s is displacement |
| D. | F -s, where F is force and s is displacement |
| Answer» B. F/s, where F is force and s is displacement | |
| 6. |
SI unit for power is |
| A. | Joules |
| B. | Watts |
| C. | Ohms |
| D. | Newton |
| Answer» C. Ohms | |
| 7. |
Food we eat contains |
| A. | Chemical Potential Energy |
| B. | Elastic Potential Energy |
| C. | Gravitational Potential Energy |
| D. | Kinetic energy |
| Answer» B. Elastic Potential Energy | |
| 8. |
An object has Ep of 500 J with a mass of 25 kg and gravity of 10 N kg-1, height of object is |
| A. | 20 m |
| B. | 1250 m |
| C. | 2 m |
| D. | 125000 m |
| Answer» D. 125000 m | |
| 9. |
A plane flies a distance of 5000 m with work done of 25000 J, force applied is |
| A. | 20000 N |
| B. | 30000 N |
| C. | 125000 N |
| D. | 5 N |
| Answer» E. | |
| 10. |
Formula for efficiency is |
| A. | (energy input / energy output) × 100 |
| B. | (energy input / energy output) × 100 |
| C. | (useful energy input / energy output) × 100 |
| D. | (useful energy output / total energy input) × 100 |
| Answer» E. | |
| 11. |
Energy cannot be |
| A. | converted or transferred |
| B. | destroyed or transferred |
| C. | created or transferred |
| D. | created or destroyed |
| Answer» E. | |
| 12. |
A ball of an unknown mass is thrown upward at a speed of 10 m s-1, calculate maximum height reached by ball if acceleration due to gravity is assumed to be 10 m s-1². |
| A. | 5 m |
| B. | 10 m |
| C. | 0.5 m |
| D. | 1 m |
| Answer» B. 10 m | |
| 13. |
As pendulum bob swings, some of its energy is converted into |
| A. | Sound Energy |
| B. | Thermal Energy |
| C. | Light Energy |
| D. | Kinetic Energy |
| Answer» C. Light Energy | |
| 14. |
If a bulb uses energy of 100 J and remains on for 25 s, power consumed by bulb will be |
| A. | 125 W |
| B. | 4 W |
| C. | 2500 W |
| D. | 75 W |
| Answer» C. 2500 W | |
| 15. |
Wind and waves are used by turbines to convert |
| A. | Mechanical Energy into Electrical Energy |
| B. | Kinetic Energy into Electrical Energy |
| C. | Potential energy into Kinetic Energy |
| D. | Potential Energy into Electrical Energy |
| Answer» C. Potential energy into Kinetic Energy | |
| 16. |
We can say that one watt is defined as |
| A. | rate of work done or energy conversion of one joule per second |
| B. | rate of time of one second per joule |
| C. | rate of distance of one meter per joule |
| D. | rate of work done or energy conversion of one joule per meter |
| Answer» B. rate of time of one second per joule | |
| 17. |
Knocking a nail into a wooden block with a hammer involves conversion between different forms of energy, which of following choices present this conversion in correct order. |
| A. | chemical energy → gravitational potential energy → kinetic energy → (sound energy + heat energy) |
| B. | chemical energy → kinetic energy → gravitational potential energy → (sound energy + heat energy) |
| C. | chemical energy → (sound energy + heat energy) → kinetic energy → gravitational potential energy |
| D. | (sound energy + heat energy) → chemical energy → kinetic energy → gravitational potential energy |
| Answer» B. chemical energy → kinetic energy → gravitational potential energy → (sound energy + heat energy) | |
| 18. |
Work done must have same unit as |
| A. | Force |
| B. | Power |
| C. | Energy |
| D. | Efficiency |
| Answer» D. Efficiency | |
| 19. |
Work can only be done when there is |
| A. | Force |
| B. | Power |
| C. | Energy |
| D. | Efficiency |
| Answer» D. Efficiency | |
| 20. |
A moving object always possesses |
| A. | Potential Energy |
| B. | Kinetic Energy |
| C. | Thermal energy |
| D. | Magnetic energy |
| Answer» C. Thermal energy | |
| 21. |
A girl accidentally dropped her mobile phone from balcony. If mass of mobile phone is 0.6 kg and height from where mobile phone was dropped is 120 m, keeping in front gravitational pull of earth, Ep of mobile phone is |
| A. | 7.2 J |
| B. | 200 J |
| C. | 72 J |
| D. | 720 J |
| Answer» E. | |
| 22. |
Work is defined as |
| A. | W = F/s, where F is force and s is displacement |
| B. | W = F + s, where F is force and s is displacement |
| C. | W = F - s, where F is force and s is displacement |
| D. | W = F × s, where F is force and s is displacement |
| Answer» E. | |
| 23. |
Mass of a car is 500 kg, which is lifted up by a crane at a height of 200 m, gravity is 10 N kg-1. Ep of car will be |
| A. | 1000000 J |
| B. | 10000 J |
| C. | 4 J |
| D. | 25 J |
| Answer» B. 10000 J | |
| 24. |
A pendulum bob moves at a speed of 2 m s-1 and mass of 0.5 kg, its Ek would be |
| A. | 1 J |
| B. | 0.25 J |
| C. | 0.5 J |
| D. | 2 J |
| Answer» B. 0.25 J | |
| 25. |
An object of mass 'm' raised to a height '2h' above ground level possesses a gravitational potential energy of |
| A. | 1 ⁄ 2 × mgh |
| B. | mgh |
| C. | 2mgh |
| D. | m × g ⁄ 2h |
| Answer» D. m × g ⁄ 2h | |
| 26. |
Power is defined as |
| A. | p = W/t, where W is work and t is time |
| B. | p = t/W, where t is time and W is work |
| C. | p = W/d, where W is work and d is distance |
| D. | p = d/W, where d is distance and W is work |
| Answer» B. p = t/W, where t is time and W is work | |
| 27. |
When force is applied on an object but object does not move, it means that |
| A. | no power is used |
| B. | no work is done |
| C. | work is done |
| D. | power is used |
| Answer» C. work is done | |
| 28. |
Formula for gravitational potential energy is |
| A. | Ep = mg/h, where m is mass, g is gravitational pull and is height |
| B. | Ep = m/gh, where m is mass, g is gravitational pull and is height |
| C. | Ep = mgh, where m is mass, g is gravitational pull and is height |
| D. | Ep = gh/m, where m is mass, g is gravitational pull and is height |
| Answer» D. Ep = gh/m, where m is mass, g is gravitational pull and is height | |
| 29. |
A bus travels with a constant force of 5000 N and work done by bus is 2500 J, distance travelled by bus is |
| A. | 2 m |
| B. | 0.5 m |
| C. | 7500 m |
| D. | 2500 m |
| Answer» C. 7500 m | |
| 30. |
Energy is |
| A. | ability to do work |
| B. | capacity of power |
| C. | efficiency |
| D. | input |
| Answer» B. capacity of power | |
| 31. |
An object is lifted 5 m above levelled ground, mass of object is 20 kg and gravitational pull is 10 N kg-2, Ep of object is |
| A. | 40 J |
| B. | 1000 J |
| C. | 2.5 J |
| D. | 0.4 J |
| Answer» C. 2.5 J | |
| 32. |
SI unit for work done is |
| A. | Pascal |
| B. | Joules |
| C. | Newton |
| D. | Ohms |
| Answer» C. Newton | |
| 33. |
A car travels a distance of 15 km with a constant force of 500 N, its work done is |
| A. | 7500000 J |
| B. | 30 J |
| C. | 15500 J |
| D. | 14500 J |
| Answer» B. 30 J | |
| 34. |
Solar energy is converted by plants in process of photosynthesis into |
| A. | Chemical Potential Energy |
| B. | Elastic Potential Energy |
| C. | Gravitational Potential Energy |
| D. | Kinetic energy |
| Answer» B. Elastic Potential Energy | |
| 35. |
Pendulum bob stops moving when all its original gain in gravitational potential energy has been converted to |
| A. | Sound Energy |
| B. | Thermal Energy |
| C. | Light Energy |
| D. | Kinetic Energy |
| Answer» C. Light Energy | |
| 36. |
In order to do work, energy is |
| A. | transferred or converted |
| B. | used up |
| C. | lost |
| D. | lost or transferred |
| Answer» B. used up | |
| 37. |
A car uses total energy of 2500 J and output is 750 J. efficiency of car is |
| A. | 50% |
| B. | 30% |
| C. | 25% |
| D. | 80% |
| Answer» C. 25% | |
| 38. |
In a typical power station, amid a series of energy transfers and conversions, about 70% of energy input gets wasted in form of thermal energy, efficiency of such a power station is about |
| A. | 0.3 |
| B. | 0.4 |
| C. | 0.7 |
| D. | 1 |
| Answer» B. 0.4 | |
| 39. |
Potential energy and kinetic energy are types of |
| A. | Electrical energy |
| B. | Magnetic energy |
| C. | Thermal energy |
| D. | Mechanical energy |
| Answer» E. | |
| 40. |
Output of a truck is 4500 J and its efficiency is 50%, input energy provided to truck is |
| A. | 5000 J |
| B. | 900 J |
| C. | 9000 J |
| D. | 500 J |
| Answer» D. 500 J | |
| 41. |
A bullet fired from a gun can pierce a target due to its |
| A. | Mechanical energy |
| B. | Heat energy |
| C. | Kinetic energy |
| D. | Acceleration |
| Answer» D. Acceleration | |
| 42. |
A moving hammer drives a nail into the wood. It has kinetic energy. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 43. |
A person is holding a bucket by applying a force of 10N. He moves a horizontal distance of 5m and then climbs up a vertical distance of 10m. Find the total work done by him |
| A. | 50J |
| B. | 150J |
| C. | 100J |
| D. | 200J |
| Answer» D. 200J | |
| 44. |
A gardener pushes a lawn roller through a distance of 20m. If he applies a force of 20kg weight in a direction inclined at 60° to the ground, find the work done by him. (g=9.8m/s2) |
| A. | 400J |
| B. | 1960J |
| C. | 250J |
| D. | 2514J |
| Answer» C. 250J | |
| 45. |
When a coolie walks on a horizontal platform with a load on his head, the work done by the coolie on the load is zero |
| A. | True |
| B. | False |
| Answer» B. False | |
| 46. |
For a body moving in a circular path, the work done by the centripetal force is |
| A. | Negative |
| B. | Positive |
| C. | Constant |
| D. | Zero |
| Answer» E. | |
| 47. |
When a body is lifted, the work done by the gravitational force is positive. |
| A. | True |
| B. | False |
| Answer» C. | |
| 48. |
When a body slides against a rough horizontal surface, the work done by friction is |
| A. | Positive |
| B. | Zero |
| C. | Negative |
| D. | Constant |
| Answer» D. Constant | |
| 49. |
When a gas filled in a cylinder fitted with a movable piston is allowed to expand, the work done by the gas is positive. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 50. |
When a body falls freely under gravity, then the work done by the gravity is |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Infinity |
| Answer» B. Negative | |