This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 4 Work – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Qn 5-When is the kinetic energy of an object maximum in a fall? A) When object is at its maximum height. B) After the object rebounds. C) Just before the object touches the ground. D) None of the above. Show Answer Correct Answer: C) Just before the object touches the ground. 2. A force of 10N displace the body by 6m in 3 seconds. The power of the agency applying the force is: A) 1.8 W. B) 5 W. C) 180W. D) None of above. Show Answer Correct Answer: D) None of above. 3. Watt is the SI unit of- A) Power. B) Force. C) Work. D) None of the above. Show Answer Correct Answer: A) Power. 4. Force exerted on an object that causes it to moved A) Force. B) Power. C) Energy. D) Work. Show Answer Correct Answer: D) Work. 5. A box is being pushed horizontally on an inclined surface by 15 N of force, in a distance of 3.5 m. Calculate the work generated by the 15 N or force? A) 60 Joule. B) 59 Joule. C) 55.5 Joule. D) 52.5 Joule. Show Answer Correct Answer: D) 52.5 Joule. 6. Gravitational potential energy depends on the ..... and ..... of the object. A) Height and mass. B) Friction and movement. C) Mass and Movement. D) Height and Friction. Show Answer Correct Answer: A) Height and mass. 7. A body of mass 2 kg is dropped from a height of 20 m. Find the sum of potential and kinetic energy of the body half-way down. A) 300 J. B) 100 J. C) 200 J. D) 400 J. Show Answer Correct Answer: D) 400 J. 8. If a force of 10 N is applied to move an object 5 meters, how much work is done? A) 75 J. B) 25 J. C) 50 J. D) 100 J. Show Answer Correct Answer: C) 50 J. 9. Which of the following statements best describes the concept of work in physics? A) Work is the rate at which energy is transferred or converted. B) Work is the energy an object has due to its motion. C) Work is the energy transferred to or from an object via the application of force along a displacement. D) Work is the energy stored in an object due to its position. Show Answer Correct Answer: C) Work is the energy transferred to or from an object via the application of force along a displacement. 10. How much work is done carrying a 10-N box horizontally across a floor for 8 m? A) 80 J. B) 10 J. C) 0 J. D) 8 J. Show Answer Correct Answer: C) 0 J. 11. What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s A) 17J. B) 52 J. C) 338 J. D) 676 J. Show Answer Correct Answer: C) 338 J. 12. If the object does not move then what is happening A) No work is being done on the object. B) Power. C) Work. D) Nothing. Show Answer Correct Answer: A) No work is being done on the object. 13. A cyclist comes to a skidding stop at 50 m. During this process, the force on the cycle due to the road is 1000 N and is directed opposite to the motion. How much work does the road do on the cycle? A) 500000J. B) 5000J. C) 50000J. D) 10000J. Show Answer Correct Answer: C) 50000J. 14. A boxer provides 1500 N of force over 0.3 meters while punching an opposing boxer. What is the work done by the boxer? A) 1499.97 J. B) 5000 J. C) 450 J. D) 0.0002 J. Show Answer Correct Answer: C) 450 J. 15. What factors affect the amount of work done on an object? A) The material it is made of. B) The color of the object. C) The force applied, the distance moved, and the angle of application. D) The temperature of the environment. Show Answer Correct Answer: C) The force applied, the distance moved, and the angle of application. 16. It is a product of force and displacement in the direction of force.Statement above refers to A) Work. B) Energy. C) Power. D) None of the above. Show Answer Correct Answer: A) Work. 17. A fan blows the air and gives it kinetic energy. An hour after the fan has been turned off, what has happened to the kinetic energy of the air? A) It turns into thermal energy. B) It disappears. C) It turns into sound energy. D) It turns into potential energy. Show Answer Correct Answer: A) It turns into thermal energy. 18. What is the kinetic energy of a ball sitting on top of a hill? A) 0 J. B) Less than 0 J. C) More than 0 J. D) None of the above. Show Answer Correct Answer: A) 0 J. 19. Calculate work done on an object by a force equal 10 Newton and moved for 2 meters A) 28. B) 36. C) 12. D) 20. Show Answer Correct Answer: D) 20. 20. A moving car of mass 800 kg has energy of 250 k J. What is the velocity of the car? A) 2 ms$^{-1}$. B) 20 ms$^{-1}$. C) 10 ms$^{-1}$. D) 25 ms$^{-1}$. E) 30 ms$^{-1}$. Show Answer Correct Answer: D) 25 ms$^{-1}$. 21. A 200 W conveyor is used to raise boxes of cupcakes up a 10 meter building. If it takes 10 seconds to move a cake, how much do the boxes weigh? A) 200 N. B) 2, 000 N. C) 20 N. D) 2 N. Show Answer Correct Answer: A) 200 N. 22. Energy stored in an object due to its position is called A) Kinetic energy. B) Potential energy. C) Positional energy. D) Location energy. Show Answer Correct Answer: B) Potential energy. 23. All of the following are vector quantities except A) Torque. B) Displacement. C) Weight. D) Force. Show Answer Correct Answer: B) Displacement. 24. A particle of mass m is moving in a circular path of a constant radius r such that its centripetal acceleration ac is varying with time as $a_c=k^2rt^2$ A) 0. B) $\frac{mk^4r^2t^5}{3}$. C) $2\pi mk^2r^2t$. D) $mk^2r^2t$. Show Answer Correct Answer: D) $mk^2r^2t$. 25. A crane lift up a load with weight 2500 N to a 4m height.Calculate the work done. A) 1000 J. B) 10 000 J. C) 100 000 J. D) None of the above. Show Answer Correct Answer: B) 10 000 J. 26. ..... is the unit for work A) Watts. B) Kelvin. C) Joules. D) Force x displacement. Show Answer Correct Answer: C) Joules. 27. What is the kinetic energy of a 1-kilogram ball is thrown into the air with an initial velocity of 30 m/sec? A) 900 J. B) 450 J. C) 29 J. D) 30 J. Show Answer Correct Answer: B) 450 J. 28. An astronaut on the Moon drops a tool box of mass 3.0 kg. It falls from rest and its kinetic energy as it hits the surface is 0.96 J.At which speed does the tool box hit the surface of the Moon? A) 0.46 m/s. B) 0.64 m/s. C) 0.57 m/s. D) 0.80 m/s. Show Answer Correct Answer: D) 0.80 m/s. 29. What is the potential energy that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system? A) Electrical Energy. B) Thermal Energy. C) Chemical Energy. D) Nuclear Energy. Show Answer Correct Answer: A) Electrical Energy. 30. How are energy and motion related? A) Energy is needed for motion. B) Motion is needed for energy. C) Motion is energy transferred. D) None of the above. Show Answer Correct Answer: A) Energy is needed for motion. 31. Unit for work done is A) Newton. B) Meter. C) Joule. D) Second. Show Answer Correct Answer: C) Joule. 32. Ethan is lifting weights at the gym. He notices that the rate at which he is doing work is called what? A) Potential energy. B) Power. C) Work. D) Kinetic energy. Show Answer Correct Answer: B) Power. 33. If you push against a wall and it doesn't move, how much work is done? A) A small amount of work. B) Maximum work. C) Zero work. D) Negative work. Show Answer Correct Answer: C) Zero work. 34. What is the unit of work? A) Newton. B) Watt. C) Joule. D) Pascal. Show Answer Correct Answer: C) Joule. 35. A moving lorry has kinetic energy. When the lorry stops, its kinetic energy is zero. This is because the kinetic energy A) Is converted to heat energy as result of friction. B) Is converted to gravitational potential energy. C) Is used to stop the lorry. D) Is destroyed. Show Answer Correct Answer: A) Is converted to heat energy as result of friction. 36. In order for work to be done, what must be true? A) Force acts in the same direction as the distance traveled. B) Force and distance are in opposite directions. C) Force is greater than distance. D) Distance is greater than force. Show Answer Correct Answer: A) Force acts in the same direction as the distance traveled. 37. I.Calculate the potential energy of an athlete of 73kg that is 1.5m above the ground. A) 7300 J. B) 3630 J. C) 1045.4 J. D) 1074.2 J. Show Answer Correct Answer: D) 1074.2 J. 38. A rock is thrown up into the air. What type of energy does it have as it is being thrown? A) Gravitational potential energy. B) Thermal energy. C) Elastic potential energy. D) Kinetic energy. Show Answer Correct Answer: D) Kinetic energy. 39. When did an object have more kinetic energy? A) When the time given on an object doubled. B) When the mass of an object doubled. C) When the mass of an object becomes half. D) None of the above. Show Answer Correct Answer: B) When the mass of an object doubled. 40. According to which law of energy, energy can't be created or destroyed? A) Law of conservation of energy. B) First law of motion. C) Laws of Energy. D) The law of tacos. Show Answer Correct Answer: A) Law of conservation of energy. 41. A 60 kg person is suspended 10 m above the air in amusement park ride. How much potential energy does he have? A) 5.880 J. B) 588 J. C) 5, 880 J. D) 580 J. Show Answer Correct Answer: C) 5, 880 J. 42. It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box? A) 2 J. B) 200 J. C) 200 N. D) 20.0J. Show Answer Correct Answer: B) 200 J. 43. Stored energy is called ..... energy. A) Pacific. B) Kinetic. C) Potential. D) Safe. Show Answer Correct Answer: C) Potential. 44. Scientists say that "work" is done in the following cases EXCEPT A) Carrying a chair across the room. B) Lifting a pail of water. C) Pulling a schoolbag. D) Pushing a door. Show Answer Correct Answer: A) Carrying a chair across the room. 45. The energy from moving water is called . A) Hydroelectric power. B) Fossil fuels . C) Solar power. D) Wind power. Show Answer Correct Answer: A) Hydroelectric power. 46. Which is the best example that something has kinetic energy? A) A car parked on a steep hill. B) A tennis ball rolling across the court. C) A picture hanging on the wall. D) A piece of coal before it's burned. Show Answer Correct Answer: B) A tennis ball rolling across the court. 47. What is the energy that objects in motion have (in other words, motion energy)? A) Electrical energy. B) Stored chemical energy. C) Kinetic energy. D) Potential energy. Show Answer Correct Answer: C) Kinetic energy. 48. The units of force and length are made three times of their earlier values. Earlier the energy of the system was 81J. what will be the energy of the same system in new units? A) 243. B) 81. C) 9. D) None of above. Show Answer Correct Answer: C) 9. 49. Two balls A and B are dropped from a window. If the mass of ball B is half the mass of ball, the ratio of kinetic energy of ball B to that of ball A just before hitting the ground is A) 0.5. B) 1.0. C) 4.0. D) 2.0. Show Answer Correct Answer: A) 0.5. 50. What is the relationship between work, energy, and power? A) Work is the rate at which energy is transferred. B) Energy is the capacity to do work, and power is the rate at which work is done. C) Power is the energy required to do work. D) Work and energy are the same, but power is different. Show Answer Correct Answer: B) Energy is the capacity to do work, and power is the rate at which work is done. 51. You exert 200 J of work by pulling on an object with 20 N of force. What distance is the object moved? A) 10 J. B) 4, 000 m. C) .01 m. D) 10 m. Show Answer Correct Answer: D) 10 m. 52. A girl weighs 400 N. She runs up a flight of stairs of height 5 m in 4 seconds. Her power is: A) 500 W. B) 2 000 W. C) 320 W. D) 400 W. Show Answer Correct Answer: A) 500 W. 53. What is the SI unit of work? A) Ohm. B) Watt. C) Joule. D) Newton. Show Answer Correct Answer: C) Joule. 54. Which of the following is an example of potential energy being converted into kinetic energy? A) A car accelerating on a highway. B) A book falling off a shelf. C) A person running a marathon. D) A light bulb being turned on. Show Answer Correct Answer: B) A book falling off a shelf. 55. A car accelerates from rest to a speed of 20 m/s in 10 seconds. What is the average power output if the car's mass is 1000 kg? A) 20000 Watts. B) 4000 Watts. C) 2000 Watts. D) 40000 Watts. Show Answer Correct Answer: A) 20000 Watts. 56. A tank of size 10m x10m x10m is full of water and built on the ground. If g = 10ms$^{-2}$, the potential energy of the water in the tank is A) 1 x 10$^{8}$ J. B) 5 x 10$^{7}$ J. C) 5 x 10$^{4}$ J. D) 5 x 10$^{5}$ J. Show Answer Correct Answer: B) 5 x 10$^{7}$ J. 57. A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done? A) 50J. B) 500J. C) 50W. D) 500W. Show Answer Correct Answer: C) 50W. 58. A car accelerates from rest to a speed of 20 m/s in 5 seconds. What is the average power output of the car's engine if the car's mass is 1000 kg? A) 80, 000 W. B) 40, 000 W. C) 20, 000 W. D) 10, 000 W. Show Answer Correct Answer: A) 80, 000 W. 59. Terry lifts his couch to find the missing remote control. Is this an example of positive work, negative work or no work? A) No Work. B) Positive Work. C) Can Not Be Determined. D) Negative Work. Show Answer Correct Answer: B) Positive Work. 60. An object raised above the ground has ..... energy A) Kinetic. B) Potential. C) All the above. D) None of the above. Show Answer Correct Answer: B) Potential. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part I) Chapter 4 Work Quiz 1Class 11 Physics (Part I) Chapter 4 Work Quiz 2Class 11 Physics (Part I) Chapter 4 Work Quiz 3Class 11 Physics (Part I) Chapter 4 Work Quiz 4Class 11 Physics (Part I) Chapter 4 Work Quiz 6Class 11 Physics (Part I) Chapter 4 Work Quiz 7Class 11 Physics (Part I) Chapter 4 Work Quiz 8Class 11 Physics (Part I) Chapter 4 Work Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books