This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 28 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the principle that energy can neither be created nor destroyed? A) Law of Thermodynamics. B) Conservation of Energy. C) Newton's Law. D) Hooke's Law. Show Answer Correct Answer: B) Conservation of Energy. 2. Geothermal energy uses ..... to produce electricity. A) Steam wells. B) Corn. C) The sun. D) The wind. Show Answer Correct Answer: A) Steam wells. 3. This is the rate at which work is done. A) Energy. B) Power. C) Force. D) None of the above. Show Answer Correct Answer: B) Power. 4. Kinetic energy is the energy of an object that is due to the object's ..... A) Inertia. B) Motion. C) Momentum. D) Position. Show Answer Correct Answer: B) Motion. 5. What is the ability to do work called? A) Power. B) Energy. C) Force. D) Distance. Show Answer Correct Answer: B) Energy. 6. The standard international unit for energy A) Newton. B) Joule. C) Kilogram. D) M/s/s. Show Answer Correct Answer: B) Joule. 7. An object has 12.4 J of potential energy and 23.5 J of kinetic energy. What is the mechanical energy of the system? A) 11.1 J. B) 1.895 J. C) 35.9 J. D) 291.4 J. Show Answer Correct Answer: C) 35.9 J. 8. What is the C.G.S. unit of energy? A) Joule. B) Erg. C) Watt. D) Newton. Show Answer Correct Answer: B) Erg. 9. ..... is the energy stored in a body orsystem because of its position, shape and state. A) Kinetic energy. B) Mechanical energy. C) Potential energy. D) Energy due to spring. Show Answer Correct Answer: C) Potential energy. 10. A 1000-watt microwave oven is used for 5 minutes. How much energy does it consume? A) 0.5 joules. B) 3000 joules. C) 30, 000 joules. D) 300, 000 joules. Show Answer Correct Answer: D) 300, 000 joules. 11. Which of the following is a unit for energy? A) Meters. B) Newtons. C) Joules. D) Watts. Show Answer Correct Answer: C) Joules. 12. In which scenario is Charlotte doing work? A) Charlotte carries her books to her next class. B) Charlotte picks up her books from her desk. C) All the above. D) None of the above. Show Answer Correct Answer: B) Charlotte picks up her books from her desk. 13. If a car accelerates from rest to a speed of 20 m/s, how does its kinetic energy change? A) The kinetic energy increases from 0 to 200m, where m is the mass of the car. B) The kinetic energy increases to 100m, where m is the mass of the car. C) The kinetic energy decreases to 0. D) The kinetic energy remains constant at 20 m/s. Show Answer Correct Answer: A) The kinetic energy increases from 0 to 200m, where m is the mass of the car. 14. Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power. A) Person A. B) Person B. C) All the above. D) None of the above. Show Answer Correct Answer: A) Person A. 15. What is the work done when a force of 10 N moves an object 3 meters in the direction of the force? A) 30 J. B) 30 N. C) 3 J. D) 3 N. Show Answer Correct Answer: A) 30 J. 16. If 100 J of work is done in 5 seconds, what is the power output? A) 20 W. B) 10 W. C) 50 W. D) 25 W. Show Answer Correct Answer: A) 20 W. 17. What are the units of measurement of work? A) Meters. B) Kg. C) N (Newtons). D) J (Joules). Show Answer Correct Answer: D) J (Joules). 18. A machine does 500 J of work in 5 seconds. What is its power output? A) 50 W. B) 100 W. C) 500 W. D) 2500 W. Show Answer Correct Answer: B) 100 W. 19. The unit for work (aka Newton-meter) A) Watt. B) Power. C) Work. D) Joule. Show Answer Correct Answer: D) Joule. 20. Based on the table below, which machine has the greater power ouput?Machine A-(amount of work)-100 J-Time-4 sMachine B-(amount of work)-500 J-Time-10 sMachine C-(amount of work)-350 J-Time-5 sMachine D-(amount of work)-450 J-Time-15 s A) Machine A. B) Machine B. C) Machine C. D) Machine D. Show Answer Correct Answer: C) Machine C. 21. A girl carries a heavy suitcase quickly up a flight of stairs. A boy of the same weight carries the same suitcase slowly up the flight of stairs. Which statement is true? A) The girl did less work and had less power than the boy. B) The girl had less power than the boy. C) The girl did more work and had more power than the boy. D) The girl had more power than the boy. Show Answer Correct Answer: D) The girl had more power than the boy. 22. Which of the following is true regarding the Principle of Conservation of Energy? A) Energy can be created or destroyed. B) Total energy in a system stays the same. C) Energy cannot be transformed from one kind to another. D) None of the above. Show Answer Correct Answer: B) Total energy in a system stays the same. 23. A wooden block of mass (m1) kg accelerates at 10ms when a force of 5N acts on it. Another block of mass(m2) kg accelerates at 20ms when the same force acts on it. If both the blocks are tied together and the same force acts on their combination the acceleration will be about A) 6.67 ms. B) 1.67 ms. C) 5.67 ms. D) 4.67 ms. Show Answer Correct Answer: A) 6.67 ms. 24. When a body Falls freely then the ..... A) Its potential energy is converted into kinetic energy. B) Its mechanical energy is converted into heat energy. C) Its kinetic energy is converted into potential energy. D) None of the above. Show Answer Correct Answer: A) Its potential energy is converted into kinetic energy. 25. A hammer with 10 J of kinetic energy hits a nail and pushes it 5.0 mm into a plank. Both the hammer and nail come to rest after the collision. What is the approximate average force that acts on the nail while it moves through 5.0 mm? A) 0.050 N. B) 2.0 N. C) 50 N. D) 2000 N. Show Answer Correct Answer: D) 2000 N. ← 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