This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. True or FalseIt is easy to find a place to create tidal power. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 2. If you push a cart with a force of 60 N for 2 m, how much work have you done if the force was in the same direction as the displacement? A) 120 J. B) 30 J. C) 120 N. D) 30 N. Show Answer Correct Answer: A) 120 J. 3. Potential energy is due to the ..... of object. A) Height. B) Mass. C) Speed. D) Size. Show Answer Correct Answer: A) Height. 4. When an object falls freely under the influence of gravity, what happens to its potential energy and kinetic energy as it descends? A) Potential energy decreases, kinetic energy increases. B) Potential energy increases, kinetic energy increases. C) Potential energy decreases, kinetic energy remains constant. D) Potential energy remains constant, kinetic energy decreases. Show Answer Correct Answer: A) Potential energy decreases, kinetic energy increases. 5. State the Work-Energy Theorem. A) The Work-Energy Theorem states that potential energy is equal to kinetic energy. B) The Work-Energy Theorem states that the work done is always zero. C) The Work-Energy Theorem states that energy cannot be created or destroyed. D) The Work-Energy Theorem states that the work done on an object is equal to the change in its kinetic energy. Show Answer Correct Answer: D) The Work-Energy Theorem states that the work done on an object is equal to the change in its kinetic energy. 6. If a force is applied to an object, but the object doesn't move, how much work is done? A) Zero work. B) Positive work. C) Negative work. D) It depends on the force applied. Show Answer Correct Answer: A) Zero work. 7. A 50 kg object is lifted to a height of 10 meters. What is the potential energy of the object at this height? (Use $g = 9.8 \, m/s^2$ A) 4900 J. B) 500 J. C) 980 J. D) 490 J. Show Answer Correct Answer: A) 4900 J. 8. How much work is necessary to double the speed of a moving object? A) Zero work. B) Same work. C) Twice the work done. D) Four times the work done. Show Answer Correct Answer: D) Four times the work done. 9. How many joules of work are done against a cart when a force of 50 N pushes it 1 kilometer away? A) 7000 J. B) 5000 J. C) 5500 J. D) 6600 J. Show Answer Correct Answer: B) 5000 J. 10. The unit of work is the ..... A) Joule. B) Force. C) All the above. D) None of the above. Show Answer Correct Answer: A) Joule. 11. What is the rate of doing work called? A) Energy. B) Work. C) Power. D) Force. Show Answer Correct Answer: C) Power. 12. The SI unit in which kinetic energy is measured is A) Newton. B) Kilogram. C) Joules. D) Metres per second. Show Answer Correct Answer: C) Joules. 13. Name the quantity which is measured in kW A) Energy. B) Power. C) Work. D) None of the above. Show Answer Correct Answer: B) Power. 14. A person lifts a crate vertically upwards at constant velocity through a distance h. The person does work x on the crate in time t. The person now lifts the same crate vertically upwards at constant velocity through the same distance, but in time 2t.The work done by the person on the crate will now be ..... A) $\frac{1}{2}x$. B) $\frac{ }{ }x$. C) $\frac{ }{ }2x$. D) $\frac{ }{ }4x$. Show Answer Correct Answer: B) $\frac{ }{ }x$. 15. What is the equation used to find power? A) J/s. B) N x m. C) F=m x A. D) None of the above. Show Answer Correct Answer: A) J/s. 16. What is the equation to calculate work when force and displacement are in the same direction? A) $W=P\left(A\times d\right)$. B) $W=P\Delta V$. C) $W=Fd\cos\left(\theta\right)$. D) $W=F\cdot d$. Show Answer Correct Answer: D) $W=F\cdot d$. 17. A 10 gram ball is rolling at 3 m/s. How much energy does it have? A) 30 J. B) 15 J. C) 4.5J. D) .045J. Show Answer Correct Answer: D) .045J. 18. What is the PE (Potential Energy) of a 250 kg boulder at the edge of the mountain that is 60 m high? A) 100 J. B) 147 KJ. C) 150, 000 J. D) 500 KJ. Show Answer Correct Answer: B) 147 KJ. 19. A construction worker pushes a wheelbarrow 10 m with a horizontal force of 5 N. How much work is done by the worker on the wheelbarrow? A) 5 J. B) 15 J. C) 2 J. D) 50 J. Show Answer Correct Answer: D) 50 J. 20. What is the definition of work? A) Product of force (F) and displacement (s) in perpendicular direction with the force. B) Product of force (F) and displacement in the same direction as the force. C) The amount of force acting on the object but the object does not move. D) The amount of energy used to stop the moving object. Show Answer Correct Answer: B) Product of force (F) and displacement in the same direction as the force. 21. Which of the following statements is true about energy? A) Energy can be destroyed. B) Energy cannot change forms. C) Energy can be transformed. D) Energy can be created. Show Answer Correct Answer: C) Energy can be transformed. 22. A forklift lifts a box as high as 1.7m in 14 seconds. If the box weighs 1690kg, calculate the power used by the forklift to lift the box. A) 2113.25 W. B) 2013.14 W. C) 2213.45 W. D) None of the above. Show Answer Correct Answer: B) 2013.14 W. 23. A race car has a mass of 1500 kg. If the kinetic energy is 675, 000 J, what is the velocity of the racecar? A) 21.21 m/s. B) 30 m/s. C) 1500 m/s. D) 900 m/s. Show Answer Correct Answer: B) 30 m/s. 24. What does the Work-Kinetic Energy Theorem state? A) The work done on an object by a net force equals the change in kinetic energy of the object. B) The work done on an object by a net force equals the change in potential energy of the object. C) The work done on an object by a net force equals the change in mechanical energy of the object. D) The work done on an object by a net force equals the change in gravitational potential energy of the object. Show Answer Correct Answer: A) The work done on an object by a net force equals the change in kinetic energy of the object. 25. Potential energy depends on ..... & ..... A) Mass, speed. B) Mass, position. C) Speed, position. D) Mass, weight. Show Answer Correct Answer: B) Mass, position. ← 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