This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 52 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 52 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What can be said about the total energy in the universe? A) It tends to decrease. B) It tends to increase. C) It is always zero. D) It is conserved. Show Answer Correct Answer: D) It is conserved. 2. Which car is more powerful according to the video? A) A race car. B) A family car. C) A truck. D) A bicycle. Show Answer Correct Answer: A) A race car. 3. How does height affect potential energy? A) Height only affects kinetic energy, not potential energy. B) Potential energy decreases with increased height. C) Height has no effect on potential energy. D) Height directly affects potential energy; higher height results in greater potential energy. Show Answer Correct Answer: D) Height directly affects potential energy; higher height results in greater potential energy. 4. What are the factors that can affect the power? A) Work done and time. B) Work done and velocity. C) Work done and force. D) None of the above. Show Answer Correct Answer: A) Work done and time. 5. A man of weight 900 N walks up a hill of height 10 m. What is the total work done? A) 0 J. B) 90 J. C) 900 J. D) 9000 J. Show Answer Correct Answer: D) 9000 J. 6. Ava, a weight lifter, lifts a mass m at a constant speed to a height h in time t during her workout. What is the average power output of Ava during this exercise? A) Mg. B) Mh. C) Mgh. D) Mgh/t. Show Answer Correct Answer: D) Mgh/t. 7. What is the equation for power and energy? A) P = E/t. B) E = P/t. C) T = P x E. D) P = W/t. Show Answer Correct Answer: A) P = E/t. 8. If the graph of the velocity vs. time of a particle is plotted, the slope will give the particle's A) Kinetic energy. B) Inertia. C) Momentum. D) Acceleration. Show Answer Correct Answer: D) Acceleration. 9. What is the GPE of a 0.3 kg apple on top of a 1 m tree? A) 0 J. B) 2.94 J. C) 0.3 J. D) 2.96 J. Show Answer Correct Answer: B) 2.94 J. 10. A moving 10 kilogram object has 20 Joules of KE. What is its velocity? A) 2 m/s. B) 4 m/s. C) 200 m/s. D) 10 m/s. Show Answer Correct Answer: A) 2 m/s. 11. The work done on a body does not depends on A) Force applied. B) Displacement. C) Initial velocity. D) Angle at which force is inclined to the displacement. Show Answer Correct Answer: C) Initial velocity. 12. Which of the following situations is the work done relates to the elastic potential energy of an object to the configuration of the system? A) A child riding a bicycle on the street. B) A student walking up a flight of stairs. C) A teacher opening the door of the classroom. D) A vendor using the weighing scale in selling goods. Show Answer Correct Answer: D) A vendor using the weighing scale in selling goods. 13. A body of mass 1 kg has a kinetic energy of 1 J when its speed is A) 0.45m/s. B) 1m/s. C) 1.414m/s. D) 2m/s. Show Answer Correct Answer: C) 1.414m/s. 14. Which of the following statements show kinetic energy? A) The battery of a lit flashlight. B) A golf ball placed at the edge of the hole. C) A river flowing down a hill. D) None of the above. Show Answer Correct Answer: C) A river flowing down a hill. 15. What happens to the total mechanical energy in a closed system? A) The total mechanical energy remains constant. B) The total mechanical energy decreases continuously. C) The total mechanical energy fluctuates randomly. D) The total mechanical energy increases over time. Show Answer Correct Answer: A) The total mechanical energy remains constant. 16. Work divided by time equals ..... A) Energy. B) Power. C) All the above. D) None of the above. Show Answer Correct Answer: B) Power. 17. A 60-watt light bulb is left on for 2 hours. How much energy does it consume? A) 120 Joules. B) 120 Watt-hours. C) 7200 Joules. D) 7200 Watt-hours. Show Answer Correct Answer: B) 120 Watt-hours. 18. An object of 10kg is raised through a height of 2m. The work done is (g=9.8m/s) A) 196J. B) 98J. C) 19.6J. D) 4.9 J. Show Answer Correct Answer: A) 196J. 19. Which source of energy uses the production of steam to generate electrical energy? A) Hydroelectric. B) Nuclear. C) Tides. D) Waves. Show Answer Correct Answer: B) Nuclear. 20. A 4.00 kg ball is on a 5.00 m ledge. If it is pushed off the ledge, how much kinetic energy will it have just before hitting the ground? A) 20 J. B) 200 J. C) 2000 J. D) 50 J. Show Answer Correct Answer: B) 200 J. 21. Which of the following forms of energy is associated with the motion of atoms and molecules? A) Potential energy. B) Kinetic energy. C) Thermal energy. D) Gravitational energy. Show Answer Correct Answer: C) Thermal energy. 22. In 1993, Cuban athlete Javier Sotomayor set the world record for the high jump. The gravitational potential energy associated with Sotomayor's jump was 1970J. Sotomayor's mass was 82kg. How high did he jump? A) 237.3 m. B) 15.83 km. C) 24 m. D) 2.45 m. Show Answer Correct Answer: D) 2.45 m. 23. Write an expression for the work done in lifting a body of mass 'm' through a vertical height 'h' A) 1/2 mv$^{2}$-1/2mu$^{2}$. B) Mgh. C) 1/2 mv$^{2}$. D) 2mgh. Show Answer Correct Answer: B) Mgh. 24. Is this an example of work? A waiter carries a tray full of meals above his head by one arm straight across the room at constant speed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. A particle is thrown upward with some kinetic energy. What happened to its kinetic energy at the highest point or height it reaches. A) Its kinetic energy is converted to potential energy. B) Its potential energy is converted into Kinetic energy. C) Its velocity becomes negative. D) None of the above. Show Answer Correct Answer: A) Its kinetic energy is converted to potential energy. ← PreviousNext →Related 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 8Class 11 Physics (Part I) Chapter 4 Work Quiz 9Class 11 Physics (Part I) Chapter 4 Work Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books