This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The unit of power A) Joule. B) Minute. C) Watt. D) Pound. Show Answer Correct Answer: C) Watt. 2. You're watching a volleyball game and someone asks you what type of energy best describe the movement of the volleyball players. Which of the following choices should your answer be in order to be correct? A) Chemical. B) Sound. C) Mechanical. D) Potential. Show Answer Correct Answer: C) Mechanical. 3. CGS unit of energy is A) Erg. B) Dyne. C) Electron volt. D) None of these. Show Answer Correct Answer: A) Erg. 4. A ball is projected upwards, As it rises there is increase in its A) Momentum. B) Retardation. C) Kinetic energy. D) Potential energy. Show Answer Correct Answer: D) Potential energy. 5. A push or a pull A) Work. B) Force. C) Acceleration. D) Speed. Show Answer Correct Answer: B) Force. 6. What is Work in physics? A) Work is the energy transferred to an object by applying a force over a distance. B) Work is the amount of force applied to an object regardless of distance. C) Work is the total energy of an object at rest. D) Work is the speed at which an object moves. Show Answer Correct Answer: A) Work is the energy transferred to an object by applying a force over a distance. 7. Which requires more power-a person walking up stairs or a person running up stairs? A) Walking. B) Running. C) They require equal power output. D) No power is required at all. Show Answer Correct Answer: B) Running. 8. In physical science, this is the use of force to move an object some distance A) Power. B) Work. C) Energy. D) None of the above. Show Answer Correct Answer: B) Work. 9. A jeweller needs to melt gold so he can make a ring. Which form of energy does he need? A) Kinetic. B) Light. C) Elastic Potential Energy. D) Heat. Show Answer Correct Answer: D) Heat. 10. What is unit used to express power? A) Watt. B) Joule. C) All the above. D) None of the above. Show Answer Correct Answer: A) Watt. 11. Kinetic energy is associated with ..... A) Speed. B) Position. C) Direction. D) Temperature. Show Answer Correct Answer: A) Speed. 12. A particle is subjected to a force F=2i+3j and undergoes a displacement r=4i+5j. The work done by the force is: A) 23 J. B) 26 J. C) 28 J. D) 35 J. Show Answer Correct Answer: B) 26 J. 13. The law of conservation of energy states that: A) Energy can be created but not destroyed. B) The total energy of an isolated system remains constant. C) Energy always decreases with time. D) Energy is a vector quantity. Show Answer Correct Answer: B) The total energy of an isolated system remains constant. 14. The SI unit of work is? A) Joules. B) Watts. C) Newtons. D) Meters. Show Answer Correct Answer: A) Joules. 15. Which of the following statements is true about energy conservation in a closed system? A) Energy can be created or destroyed. B) Energy can only be transferred or transformed. C) Energy is always lost as heat. D) Energy remains constant without any transformation. Show Answer Correct Answer: B) Energy can only be transferred or transformed. 16. What is the law of physics that states energy cannot be created or destroyed? A) Newton's Law. B) Boyle's Law. C) Law of Conservation of Energy. D) Einstein's Theory. Show Answer Correct Answer: C) Law of Conservation of Energy. 17. What is the difference between calculating power and work? A) Power takes into account the time it takes to complete a task. B) Work takes into account the time it takes to complete a task. C) Power is force/area. D) Work is force/area. Show Answer Correct Answer: A) Power takes into account the time it takes to complete a task. 18. A force moves a box 150m at an angle of 25 degrees from horizontal, doing 545J of work against friction. Calculate the force. A) 4.0N. B) 9.5N. C) 3.6N. D) 6.9N. Show Answer Correct Answer: A) 4.0N. 19. Kinetic energy + Potential energy = A) Total thermal energy. B) Total potential energy. C) Total mechanical energy. D) Total kinetic energy. Show Answer Correct Answer: C) Total mechanical energy. 20. Work is done only by the part of the force that is in the same direction as the what? A) Force. B) Angle. C) Motion. D) None of the above. Show Answer Correct Answer: C) Motion. 21. In which case is NO work done? A) Lifting a box vertically. B) Pushing a cart horizontally. C) Holding a heavy box stationary. D) Rolling a ball down a hill. Show Answer Correct Answer: C) Holding a heavy box stationary. 22. Energy is the ability A) To do work. B) To have fun. C) To stay awake. D) To try to lift a heavy object. Show Answer Correct Answer: A) To do work. 23. A 60 watt light bulb requires how many joules of energy to shine at its rated brightness? A) 120. B) 30. C) 60. D) None of the above. Show Answer Correct Answer: C) 60. 24. How does energy conservation apply to a pendulum? A) The pendulum only converts thermal energy. B) Energy conservation in a pendulum involves the conversion between potential and kinetic energy. C) The pendulum's energy remains constant without any conversion. D) Energy is lost as sound during the swing. Show Answer Correct Answer: B) Energy conservation in a pendulum involves the conversion between potential and kinetic energy. 25. Which of the following is required to have gravitational potential energy? A) Velocity. B) Height. C) Time. D) Kinetic Energy. Show Answer Correct Answer: B) Height. ← 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