This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 4 Work – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Anika, Mia, and Charlotte are observing a moving car. They notice that the car has energy due to its state of motion. This type of energy is called: A) Work. B) Potential energy. C) Kinetic energy. D) Power. Show Answer Correct Answer: C) Kinetic energy. 2. When a car breaks to a stop, all its kinetic energy is converted to ..... A) Heat through friction. B) Stopping Energy. C) Chemical Energy. D) Potential Energy. E) Nuclear Energy. Show Answer Correct Answer: A) Heat through friction. 3. Peter does 3, 000 joules (J) of work by moving an object 40 meters (m). What is the force that Peter applies to the object? A) 3, 040 N. B) 120, 000 N. C) 2, 960 N. D) 75 N. Show Answer Correct Answer: D) 75 N. 4. Qn 2-When a heavy and a light ball is dropped at the same time and with the same velocity, once they collide in air which ball bounces back to a greater height? A) Lighter ball. B) Heavier ball. C) Both will bounce till the same height. D) Not enough data. Show Answer Correct Answer: A) Lighter ball. 5. What are the conditions for work to be done? A) A force must be applied to the object. B) The object must be displaced in the same direction as the force. C) Both A and B. D) Neither A nor B. Show Answer Correct Answer: C) Both A and B. 6. What do you need to calculate work done? A) Force and time. B) Force and distance. C) Mass and speed. D) Time and speed. Show Answer Correct Answer: B) Force and distance. 7. The energy put into a system/object is equal to: A) The mechanical energy of the object. B) The work done on the system/object. C) The energy output of the system. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work? A) Yes, work was done. B) No, work wasn't done. C) All the above. D) None of the above. Show Answer Correct Answer: B) No, work wasn't done. 9. Which of the following statements about mechanical advantage is true? A) It is the ratio of output force to input force. B) It is always greater than 1. C) It is a measure of how much work is done. D) It depends on the type of machine used. Show Answer Correct Answer: A) It is the ratio of output force to input force. 10. If a charging elephant has kinetic energy, it must also have A) Potential energy. B) Momentum. C) Work. D) All of these. Show Answer Correct Answer: B) Momentum. 11. One of the tallest radio towers is in Fargo, North Dakota. The tower is 639m tall, or about 44 percent taller than the Sears Tower in Chicago. If a bird lands on top of the radio tower, so that the gravitational potential energy associated with the bird is 2033J, what is its mass? A) 0.32 kg. B) 31.17 kg. C) 3.08 kg. D) 13.13 kg. Show Answer Correct Answer: A) 0.32 kg. 12. What is the power of an agent that does 200 J of work in 10 seconds? A) 20 W. B) 2 W. C) 200 W. D) 10 W. Show Answer Correct Answer: A) 20 W. 13. When a force (F) is applied to an object and causes the location of the point of application to displace in space ($\Delta$d). Therefore, what is the formula for Work? A) W = F / $\Delta$d. B) W = $\Delta$d-F. C) W = F x distance. D) W = F x $\Delta$d. Show Answer Correct Answer: D) W = F x $\Delta$d. 14. "An object in motion will stay in motion" is which of Newton's laws? A) Newton's first law of motion. B) Newton's second law of motion. C) Newtons third law of motion. D) None of these. Show Answer Correct Answer: A) Newton's first law of motion. 15. A group of students pushing against a wall that is not moving. Is work done? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 16. Raising an auto in a service station requires work. Raising it in half the time requires ..... A) Four times the power. B) Twice the power. C) Half the power. D) The same power. Show Answer Correct Answer: B) Twice the power. 17. What is the renewable source of energy that comes from extreme heat within the Earth? A) Solar. B) Geothermal. C) Biomass. D) Hydroelectric. Show Answer Correct Answer: B) Geothermal. 18. In which of following cases work is said to be done? A) Holding a heavy object still. B) Pushing a wall. C) Lifting a book off the ground. D) Sitting and reading a book. Show Answer Correct Answer: C) Lifting a book off the ground. 19. What is the SI unit for power? A) Newtons (N). B) Joules (J). C) Watts (W). D) Newton-metres (N m). Show Answer Correct Answer: C) Watts (W). 20. What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J is produced by the 1machine? A) 26%. B) 386%. C) 0.25 J. D) 3.86 J. Show Answer Correct Answer: A) 26%. 21. Force is measured using which unit? A) Newtons. B) Kilograms. C) Meters. D) Joules. Show Answer Correct Answer: A) Newtons. 22. If the amount of time to takes to move a box up the stairs decreases, what happens to power? A) Decreases. B) Increases. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Increases. 23. How do we express the total amount of energy a moving object has? A) KE-PE. B) KE + PE. C) KE x PE. D) KE / PE. Show Answer Correct Answer: B) KE + PE. 24. A shopping cart has a mass of 40 kg is pushed 10 m with a force of 20 N. How much work is done on the cart? A) 400 J. B) 8000 J. C) 200 J. D) 800 J. Show Answer Correct Answer: C) 200 J. 25. An object is lifted vertically by a motor. In which example is the power produced the greatest? A) Lifting it the same distance in a shorter time. B) Lifting it a shorter distance in a longer time. C) Lifting it the same distance in a longer time. D) Lifting it a shorter distance in the same time. Show Answer Correct Answer: A) Lifting it the same distance in a shorter time. 26. Which of the following quantities is/are conserved during perfectly inelastic collision? A) Kinetic energy. B) Momentum. C) Both A and B. D) Neither A nor B. Show Answer Correct Answer: B) Momentum. 27. What is equal to the work done by a force of one newton when its point of application moves through a distance of one meter in the direction of the force? A) Watt. B) Mechanical Advantage. C) Efficiency. D) Joule. Show Answer Correct Answer: D) Joule. 28. Fred kicks a ball with a force of 20N to George, who is 5M away. How much work was done to the ball? A) 25J. B) 100J. C) 75J. D) 4J. Show Answer Correct Answer: B) 100J. 29. Assertion:A body cannot have energy without having momentum but it can have momentum without having energy.Reason:Momentum and Energy have same dimensions. A) Assertion and Reason are true, Reason is the correct explanation of Assertion. B) Assertion and Reason are true, Reason is not the correct explanation of Assertion. C) Assertion is true, Reason is false. D) Both Assertion and Reason are false. Show Answer Correct Answer: D) Both Assertion and Reason are false. 30. How much work is produced when 350 N is used to move a car 5 m (W=Fd)? A) 175 J. B) 70 J. C) 355 J. D) 1750 J. Show Answer Correct Answer: D) 1750 J. 31. ..... is the ability to do work, or the ability to exert a force and make something move. A) Velocity. B) Force. C) Energy. D) Power. Show Answer Correct Answer: C) Energy. 32. A rock is thrown up into the air. What type of energy does it have at its maximum height? A) Elastic potential energy. B) Kinetic energy. C) Gravitational potential energy. D) Thermal energy. Show Answer Correct Answer: C) Gravitational potential energy. 33. ..... is stored energy. A) Potential. B) Kinetic. C) None of the above. D) All of the above. Show Answer Correct Answer: A) Potential. 34. A car of mass 1000 kg is traveling at a speed of 20 m/s. What is its kinetic energy? A) 20, 000 J. B) 400, 000 J. C) 10, 000 J. D) 200, 000 J. Show Answer Correct Answer: D) 200, 000 J. 35. A machine does 500 J of work in 1 minute. What is its average power output? A) 500 W. B) 460 W. C) 8.3 W. D) 30, 000 W. Show Answer Correct Answer: C) 8.3 W. 36. If an object moves from a high place to a lower place, will it gain or lose potential energy? A) Lose. B) Gain. C) Neither. D) Both. Show Answer Correct Answer: A) Lose. 37. The second of Newton's Laws says ..... A) An object in motion will stay in motion. B) The force on an object is equal to its mass times its acceleration. C) When objects interact, they apply forces to each other of equal magnitude and opposite direction. D) None of the above. Show Answer Correct Answer: B) The force on an object is equal to its mass times its acceleration. 38. Potential energy is ..... A) Energy in motion. B) Stored energy. C) All the above. D) None of the above. Show Answer Correct Answer: B) Stored energy. 39. Power is defined as the rate ..... A) At which work is done. B) Of change of momentum. C) Of change of displacement. D) Of change of velocity. Show Answer Correct Answer: A) At which work is done. 40. What unit is used to measure power? A) Meter per second. B) Joule. C) Newton. D) Watt. Show Answer Correct Answer: D) Watt. 41. Hafiy Danial pushed a box of toys on the floor with a force of 25N for a distance of 7m. Calculate the work done by Hafiy Danial A) 17.5 J. B) 3.57 J. C) 175 J. D) 35 J. Show Answer Correct Answer: C) 175 J. 42. To solve for power, we use the formula:Power = Work divided by ..... A) Time. B) Velocity. C) Force. D) Distance. Show Answer Correct Answer: A) Time. 43. What would happen to the kinetic energy of an object if you doubled the mass? A) The kinetic energy would be cut in half. B) The kinetic energy would double. C) The kinetic energy would triple. D) It would stay the same because mass does not effect kinetic energy. Show Answer Correct Answer: B) The kinetic energy would double. 44. The unit or label for work is A) Seconds. B) Netwons. C) Joules. D) Meters. Show Answer Correct Answer: C) Joules. 45. Name the physical quantity in which is measured in Calorie? How it is related to SI unit. A) Work, 1 J = 1.6 x $10^{-19}$. B) Work, 1 C= 4.18.J. C) Energy, 1 C= 4.18.J. D) None of the above. Show Answer Correct Answer: C) Energy, 1 C= 4.18.J. 46. A machine gun of mass "M" fires "n" bullets each of mass "m" with a velocity "v" in a time "t" . The power of the machine gun is 4) mnv/t A) Mnv$^{2}$/2t. B) Mnv/t. C) MMnv$^{2}$/2 t. D) Mnv$^{2}$/2t. Show Answer Correct Answer: A) Mnv$^{2}$/2t. 47. A 10 kg mass is lifted to 3 m. What is its weight? What is its potential energy? How much work is being done? A) Weight = 98 NPE = 294 J Work = 294 J. B) Weight = 10 kgPE = 10 JWork = 30 J. C) Weight = 98 NPE = 294 J Work = 30 J. D) Weight = 30 NPE = 30 J Work = 294 J. Show Answer Correct Answer: A) Weight = 98 NPE = 294 J Work = 294 J. 48. Name the form of energy, which is put to use A) KE. B) ME. C) PE. D) None of the above. Show Answer Correct Answer: A) KE. 49. ..... can move faster through empty space. A) Sound. B) Chemical. C) Light / Radiant. D) Nuclear. Show Answer Correct Answer: C) Light / Radiant. 50. Which of the following is the correct formula for calculating kinetic energy? A) $KE = mv^2$. B) $KE = \frac{1}{2}mv$. C) $KE = mgh$. D) $KE = \frac{1}{2}mv^2$. Show Answer Correct Answer: D) $KE = \frac{1}{2}mv^2$. 51. As a ball falls freely, A) Its kinetic energy decreases and potential energy decreases. B) Its kinetic energy decreases and potential energy increases. C) Its kinetic energy increases and potential energy decreases. D) Its kinetic energy increases and potential energy increases. Show Answer Correct Answer: C) Its kinetic energy increases and potential energy decreases. 52. In tug of war, work done by a losing team is A) Zero. B) Positive. C) Negative. D) None of these. Show Answer Correct Answer: C) Negative. 53. The law that energy can be neither created or destroyed is called the law of A) Conservation of energy. B) Non-destruction of energy. C) Null effect. D) Balance of energy. Show Answer Correct Answer: A) Conservation of energy. 54. If the same work is done, a more powerful machine will: A) Apply a greater force. B) Use more total energy. C) Move a greater distance. D) Complete the task faster. Show Answer Correct Answer: D) Complete the task faster. 55. An electric heater of rating 1000 W is used for 5 hrs per day for 20 days. What is the electrical energy utilized? A) 120 kwh. B) 100 kwh. C) 500 kwh. D) 200 kwh. Show Answer Correct Answer: B) 100 kwh. 56. "the work done by the net force on a body equals the change in the body's kinetic energy" this is the statement for? A) Power. B) Energy. C) Work done. D) Work Energy Theorem. Show Answer Correct Answer: D) Work Energy Theorem. 57. Gravitational potential energy depends on which of the following factors? A) Mass and speed. B) Height and mass. C) Speed and time. D) Distance and direction. Show Answer Correct Answer: B) Height and mass. 58. Which of the following remain constant of an isolated system? A) Sum of kinetic energy and spotential energy. B) Kinetic energy. C) Potential energy. D) None of above. Show Answer Correct Answer: A) Sum of kinetic energy and spotential energy. 59. Richard pulls a toy 3.0 m across the floor by a string, applying a force of 0.50 N. During the first meter, the string is parallel to the floor. In the next two meters, the string makes an angle of 30$^{o}$ with the horizontal direction. What is the total amount of work done by Richard on the toy? A) 1.366 J. B) 1.299 J. C) 1.500 J. D) 1.000 J. Show Answer Correct Answer: A) 1.366 J. 60. What is the principle that energy can neither be created nor destroyed? A) Newton's Law. B) Conservation of Energy. C) Law of Thermodynamics. D) Hooke's Law. Show Answer Correct Answer: B) Conservation of Energy. ← 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 5Class 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books