This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A boy produces an average power output of 60 W as he rides his bicycle for 2.0 minutes. How much useful energy does he expend? A) 0.50 J. B) 30 J. C) 120 J. D) 7200 J. Show Answer Correct Answer: D) 7200 J. 2. What is required for 'work' to be considered as being done? A) Movement in the same direction as the force. B) Movement in the direction opposite to the force. C) Force must be applied in any direction. D) Force must be applied without movement. Show Answer Correct Answer: A) Movement in the same direction as the force. 3. What is the relationship between power and work? A) Power is the energy consumed. B) Power is the work done per unit time. C) Power is the force applied. D) Power is the total work done. Show Answer Correct Answer: B) Power is the work done per unit time. 4. One advantage to wind power is: A) Wind is free. B) Sometimes there is no wind. C) Birds can get hurt in the tower. D) Coasts that have a lot of wind are expensive. Show Answer Correct Answer: A) Wind is free. 5. How high up is a 3200-kg plane if it has 960000 J of potential energy? A) 10 m. B) 30 m. C) 307200000 m. D) 300 m. Show Answer Correct Answer: B) 30 m. 6. In order for Work to happen, what 2 things must occur? A) Mass and Displacement. B) Force and Mass. C) Force and Work. D) Force and displacement. Show Answer Correct Answer: D) Force and displacement. 7. A worker carrying a box of mass 20 kg to a height of 2.5m. Calculate the work done by the worker in carrying the box. A) 49.05J. B) 490.5J. C) 4950J. D) 1000J. Show Answer Correct Answer: B) 490.5J. 8. This is a rate of doing work. A) Joules. B) Power. C) Energy. D) Work. Show Answer Correct Answer: B) Power. 9. If a machine does 200 J of work in 4 seconds, what is its power rating? A) 100 W. B) 75 W. C) 25 W. D) 50 W. Show Answer Correct Answer: D) 50 W. 10. A 500 N force is applied to lift a 100 kg object vertically upwards. How much work is done if the object is raised 5 meters? A) 50 J. B) 2500 J. C) 5000 J. D) 10, 000 J. Show Answer Correct Answer: B) 2500 J. 11. A 2 kg object is moving at a speed of 10 m/s and comes to rest in 5 seconds due to a constant retarding force. The work done by the force is: A) -200 J. B) -100 J. C) 0 J. D) 100 J. Show Answer Correct Answer: A) -200 J. 12. The work done on a body of mass 20 kg moving in a circular path is: A) 20 J. B) 0 J. C) 10 J. D) 200 J. Show Answer Correct Answer: B) 0 J. 13. A robotic arm lifts a stack of cafeteria trays weighing 62 newtons (N). It moves the trays 2 meters (m). How much work has the robotic arm performed? A) 31 J. B) 64 J. C) 124 J. D) 186 J. Show Answer Correct Answer: C) 124 J. 14. What factors determine the potential energy of an object? A) Color, shape, and size of the object. B) Temperature, pressure, and volume. C) Speed, direction, and mass of the object. D) Mass, height above a reference point, and gravitational acceleration. Show Answer Correct Answer: D) Mass, height above a reference point, and gravitational acceleration. 15. What does the term "Power" mean in physics? A) It's a measurement of strentgh. B) It's the speed of an object in motion. C) It's the rate at which work is done or energy is transferred. D) It's the force of gravity on an object. Show Answer Correct Answer: C) It's the rate at which work is done or energy is transferred. 16. The unit of power in SI unit is equivalent to A) Kg ms$^{-2}$. B) Kg m$^{2}$s$^{-2}$. C) Kg m$^{2}$s$^{-3}$. D) None of above. Show Answer Correct Answer: C) Kg m$^{2}$s$^{-3}$. 17. What is an example of Kinetic energy? A) Laying down in bed. B) A football being thrown downfield. C) Setting a book on the counter. D) Sitting in your desk. Show Answer Correct Answer: B) A football being thrown downfield. 18. Work A) W= Fxd. B) W= F/d. C) W= d/F. D) W= 1/2 F d. Show Answer Correct Answer: A) W= Fxd. 19. How much work you do in a certain amount of time is called ..... A) Work. B) Power. C) Energy. D) Force. Show Answer Correct Answer: B) Power. 20. Energy that is stored in bonds between atoms is: A) Mechanical energy. B) Chemical energy. C) Kinetic energy. D) Nuclear energy. Show Answer Correct Answer: B) Chemical energy. 21. A bird is flying with 1200 J of gravitational potential energy and 600 J of kinetic energy. What is the total mechanical energy of the bird? A) 1200 J. B) 600 J. C) 1800 J. D) 0 J. Show Answer Correct Answer: C) 1800 J. 22. Which example involves transferring energy from one object to another? A) A bowler releasing a bowling ball. B) A fan blowing air. C) A parked car. D) A person sitting on a chair. Show Answer Correct Answer: A) A bowler releasing a bowling ball. 23. A boy pushes on a parked car with a force of 250N. The car does not move. How much work does the boy do? A) 250J. B) 250N. C) 0J. D) 2500J. Show Answer Correct Answer: C) 0J. 24. If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved? A) 272 m. B) 17 m. C) 4.05 m. D) 272 cm. Show Answer Correct Answer: B) 17 m. 25. If a conveyor belt uses 10 J to move a piece of candy a distance of 3 m in 20s, what is the conveyor belt's power? A) 0.5 W. B) 1.5 W. C) 0.5 J. D) 67 W. Show Answer Correct Answer: A) 0.5 W. ← 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