This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 41 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Mrs. Steward carries a 50 N cat 10 m across a room. Her arms exert an upward force on the cat equal to its weight. How much work is Mrs. Steward doing on the cat? A) 500 N. B) 50 N. C) 5 N. D) 0 N. E) None of the above. Show Answer Correct Answer: D) 0 N. 2. What is the kinetic energy of a 4 kg rock falling through the air at 5 m/s? A) 10 J. B) 50 J. C) 20 J. D) 200 J. Show Answer Correct Answer: B) 50 J. 3. The unit of energy is A) Joule. B) Newton. C) Watt. D) Kg. Show Answer Correct Answer: A) Joule. 4. Which of the following are required in order to have power? A) Work. B) A change in mass. C) Constant speed or velocity. D) Constant height. Show Answer Correct Answer: A) Work. 5. The force-extension graph for a spring is shown. What represents the work done to extend the spring? A) The area under the graph. B) The gradient of the graph. C) The reciprocal of the gradient of the graph. D) Twice the area under the graph. Show Answer Correct Answer: A) The area under the graph. 6. If you do 200 J of work in 10 seconds, your power output is ..... A) 2000 W. B) 200 W. C) 20 W. D) 2 W. Show Answer Correct Answer: C) 20 W. 7. For perfectly elastic body coefficient of restitution is A) Zero. B) 1. C) Less than 1. D) More than 1. Show Answer Correct Answer: B) 1. 8. What is the formula for Power? A) E=mc$^{2}$. B) W= F x d. C) P = W/T. D) None of the above. Show Answer Correct Answer: C) P = W/T. 9. The unit of work, joule, is dimensionally the same as ..... A) Newton/second. B) Newton-second. C) Newton/kilogram. D) Newton-meter. Show Answer Correct Answer: D) Newton-meter. 10. What are the units of work? A) Newtons. B) Watts. C) Joules. D) None of the above. Show Answer Correct Answer: C) Joules. 11. What factors affect gravitational potential energy? A) Temperature, pressure, and volume. B) Mass, height, and gravitational field strength. C) Color, shape, and texture. D) Speed, distance, and time. Show Answer Correct Answer: B) Mass, height, and gravitational field strength. 12. What is the unit of measurement for kinetic energy A) Newton. B) Joule. C) Watt. D) Kilogram. Show Answer Correct Answer: B) Joule. 13. Two cars with different power ratings accelerating to the same speed: A) Use different amounts of total energy. B) Apply different amounts of total force. C) Cover different distances. D) Take different amounts of time. Show Answer Correct Answer: D) Take different amounts of time. 14. I swing a ball around my head at constant speed in a circle with circumference 3 m. What is the work done on the ball by the 10 N tension force in the string during one revolution of the ball? Hint:What is the angle between Force and Displacement? A) 30 J. B) 20 J. C) 10 J. D) 0 J. Show Answer Correct Answer: D) 0 J. 15. Calculate the average speed that a motor rated 200W raises a 40kg load A) 2m/s. B) 0.5m/s. C) 5m/s. D) 0.2m/s. Show Answer Correct Answer: B) 0.5m/s. 16. If the momentum of an object is doubled then the kinetic energy will increase by A) Four times. B) Five times. C) Three times. D) Twice. Show Answer Correct Answer: A) Four times. 17. On a force versus stretch graph, the area under the curve is a representation of: A) Force. B) Position. C) KE. D) PE. E) SPE. Show Answer Correct Answer: E) SPE. 18. If the mass and velocity of a body is doubled, how does the kinetic energy of the body change? A) 2 times. B) Same. C) 4 times. D) 8 times. Show Answer Correct Answer: D) 8 times. 19. A boy raises a box with a weight of 120N from a height of 2m. The work done by him is ..... A) 60J. B) 120J. C) 240J. D) 130j. Show Answer Correct Answer: C) 240J. 20. What must happen for work to be done according to physics? A) An object must move in any direction. B) An object must remain stationary. C) An object must move in the direction of the applied force. D) An object must be lifted off the ground. Show Answer Correct Answer: C) An object must move in the direction of the applied force. 21. Objects in motion have ..... energy. A) Sound. B) Thermal. C) Mechanical. D) Electrical. Show Answer Correct Answer: C) Mechanical. 22. A crane carries a 500 N load to a height of 10 m in 2 minutes. What is the power generated by the crane? A) 41.7 W. B) 417 W. C) 4171 W. D) 41700 W. Show Answer Correct Answer: A) 41.7 W. 23. Lifting weights A) Work. B) No Work. C) All the above. D) None of the above. Show Answer Correct Answer: A) Work. 24. In which of these cases is work being done? A) A student sleeps. B) A student pushes a locked door that does not move. C) A student carries his chair into another room. D) A student sits on the carpet. Show Answer Correct Answer: C) A student carries his chair into another room. 25. This type of energy requires that the object is in motion ..... A) Elastic Potential Energy. B) Chemical Energy. C) Gravitational Potential Energy. D) Kinetic Energy. Show Answer Correct Answer: D) Kinetic 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