This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 50 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 50 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Most renewable energy is derived directly or indirectly from the sun. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. What happens to the total mechanical energy in a closed system with only conservative forces? A) It increases. B) It decreases. C) It remains constant. D) It becomes zero. Show Answer Correct Answer: C) It remains constant. 3. Energy of a rock perched on a cliff is an example of ..... A) Gravitational. B) Elastic. C) Chemical. D) Kinetic. Show Answer Correct Answer: A) Gravitational. 4. What is the formula for Gravitational Potential Energy? A) PE = m*g*h. B) KE = 1/2m*v2. C) W = F*d. D) P = W/t. Show Answer Correct Answer: A) PE = m*g*h. 5. In an inelastic collision, the final kinetic energy is always less then the initial kinetic energy of the system. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. If a force of 100 N is applied to move a box 4 meters across a floor, how much work is done on the box? A) 400 J. B) 25 J. C) 104 J. D) 500 J. Show Answer Correct Answer: A) 400 J. 7. Kinetic energy increase if mass increases A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. An object of mass 2.4 kg is kept on a level surface. On applying a force of 50 N, the object moves 8 m in the direction of the force. Calculate the quantity of work done. A) 400J. B) 200J. C) 50J. D) 100J. Show Answer Correct Answer: A) 400J. 9. What determines the amount of work done? A) Only the force applied. B) Only the distance moved. C) Both force and distance. D) Only the time taken. Show Answer Correct Answer: C) Both force and distance. 10. The law of conservation states that A) Every action has an equal and opposite reaction. B) All matter has thermal energy. C) Energy cannot be created or destroyed, only changes form. D) Heat moves from an object of higher temperature to an object of lower temperature. Show Answer Correct Answer: C) Energy cannot be created or destroyed, only changes form. 11. A weight lifter jerks 220 kg vertically through 1.5 meters and holds still at that height for two minutes. The works done by him in lifting and in holding it still are respectively A) 220J, 330J. B) 3234 J, 0. C) 2334 J, 10 J. D) 0, 3234 J. Show Answer Correct Answer: B) 3234 J, 0. 12. The impulse experienced by an object is equivalent to its change in ..... A) Displacement. B) Kinetic energy. C) Momentum. D) Velocity. Show Answer Correct Answer: C) Momentum. 13. Principle of Conservation of Energy states that energy A) Is created from motion. B) Energy cannot be transferred from one form to another. C) Cannot be created or destroyed. D) Can only be converted into heat. Show Answer Correct Answer: C) Cannot be created or destroyed. 14. Why does a boy do no work when holding a heavy bag without moving? A) The bag is too heavy. B) The bag has no energy. C) There is no movement. D) He is too tired. Show Answer Correct Answer: C) There is no movement. 15. What does potential energy depend on? A) Time and work. B) Force and distance. C) Mass and height. D) Mass and velocity. Show Answer Correct Answer: C) Mass and height. 16. What does the work-energy theorem state? A) Work done is equal to force times distance. B) Energy cannot be created or destroyed. C) Kinetic energy is always conserved. D) The change in kinetic energy is equal to the work done by the net force. Show Answer Correct Answer: D) The change in kinetic energy is equal to the work done by the net force. 17. A spring stretched twice as far will have ..... the amount of Spring Potential Energy stored. A) Half the. B) Four times. C) Twice the. D) The same as. E) One fourth. Show Answer Correct Answer: B) Four times. 18. One of the tallest radio towers is in Fargo, North Dakota. The tower is 629 m tall. If a bird lands on top of the tower, so that the gravitational potential energy associated with the bird is 2033 J, what is its mass? Let g = 9.8N/kg A) 1, 278, 757 kg. B) 12, 531, 819 kg. C) 3.25 kg. D) 0.330 kg. E) 0.309 kg. Show Answer Correct Answer: D) 0.330 kg. 19. When two stationary objects are suddenly pushed by a spring between them, what happens to the total momentum of the system? Assume that no friction acts on the two objects. A) Decreases. B) Increases. C) Remains the same. D) Increases then decreases. Show Answer Correct Answer: C) Remains the same. 20. A ball thrown into the air has a maximum height of 10 meters. Where in its rise to power will the balls kinetic energy and potential energy be equal? A) 0 m. B) 5 m. C) 10 m. D) They are never equal. Show Answer Correct Answer: B) 5 m. 21. How do you calculate power if 100 J of work is done in 5 seconds? A) 15 W. B) 25 W. C) 20 W. D) 50 W. Show Answer Correct Answer: C) 20 W. 22. Which of the following statements explains the properties and effects of conservative forces? Conservative forces would ..... A) Result in work that are path dependent. B) Result in work that are path independent. C) Lead to work that do not conserve energy. D) Mean the initial and final energies are not the same. Show Answer Correct Answer: B) Result in work that are path independent. 23. ENERGY is defined as ..... A) The rate of power. B) The ability to do work. C) The rate of work. D) The ability to generate power. Show Answer Correct Answer: B) The ability to do work. 24. Where would a car traveling on a roller coaster track have the most potential energy? A) At the bottom. B) Halfway to the top. C) At the top. D) Halfway to the bottom. E) It is always the same. Show Answer Correct Answer: C) At the top. 25. What is the power output of a 60 Watt light bulb in terms of energy used per second? A) 60 Joules. B) 600 Joules. C) 6 Joules. D) 0.6 Joules. Show Answer Correct Answer: A) 60 Joules. ← 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