This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 25 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the formula for calculating gravitational potential energy? A) Mass * gravity * height. B) Force * distance. C) Mass * velocity. D) Mass * acceleration. Show Answer Correct Answer: A) Mass * gravity * height. 2. Water stored in a dam possesses: A) No energy. B) Electrical energy. C) Kinetic energy. D) Potential energy. Show Answer Correct Answer: D) Potential energy. 3. Your friend's car is stuck in the snow. You push very hard and become very tired but the car won't move. Did you do work? A) Yes, work was done. B) No, work wasn't done. C) All the above. D) None of the above. Show Answer Correct Answer: B) No, work wasn't done. 4. What is the unit of power in the International System of Units? A) Ohm. B) Watt. C) Volt. D) Joule. Show Answer Correct Answer: B) Watt. 5. A man carries a box across a room at constant velocity. Is work being done on the box by the man? A) Yes. B) No. C) Half of the time. D) Not enough information. Show Answer Correct Answer: B) No. 6. If a weight lifter lifts 750N by 2.0m in 5.77s, what is her power? A) 260W. B) 8655W. C) 2164W. D) 15.4mW. E) 65W. Show Answer Correct Answer: A) 260W. 7. In an elastic collision, which of the following is conserved? A) Only momentum. B) Both momentum and kinetic energy. C) Neither momentum nor kinetic energy. D) Only kinetic energy. Show Answer Correct Answer: B) Both momentum and kinetic energy. 8. Oil is a renewable source of energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. An object of weight 7 N is raised from a height of 2 m to a height of 8 m. The change in gravitational potential energy is A) $42J$. B) $56J$. C) $412J$. D) $549J$. Show Answer Correct Answer: A) $42J$. 10. What is the relationship between work and energy in physics? A) Work is the ability to do energy. B) Energy is the ability to do work. C) Work and energy are unrelated. D) Energy is the force applied over distance. Show Answer Correct Answer: B) Energy is the ability to do work. 11. A body starts from rest and moves with uniform acceleration. What is the ratio of kinetic energies at the end of 1st, 2nd and 3rd seconds of its journey? A) 1:8:27. B) 1:2:3. C) 1:4:9. D) 3:2:1. Show Answer Correct Answer: C) 1:4:9. 12. A ball is thrown into the air and gains 25 J of GPE. If it has a mass of 0.5 kg, How high up into the air did it travel? A) .02 m. B) .2 m. C) 2 m. D) 20 m. Show Answer Correct Answer: B) .2 m. 13. State whether work is a scalar or vector quantity A) Vector. B) Scalar. C) All the above. D) None of the above. Show Answer Correct Answer: B) Scalar. 14. According to the Principle of Conservation of Energy, what happens to the total energy in a closed system? A) It increases over time. B) It decreases over time. C) It remains constant. D) It varies randomly. Show Answer Correct Answer: C) It remains constant. 15. What is weight? A) It is the amount of matter in a body. B) It is the amount of force in a body. C) It is the gravitational force acting on a body. D) It is the kinetic force acting on a body. Show Answer Correct Answer: C) It is the gravitational force acting on a body. 16. The property of an object or system that allows it to do work is ..... A) Work. B) Energy. C) Power. D) Distance. Show Answer Correct Answer: B) Energy. 17. Anika, Mia, and Charlotte are observing a moving car. They notice that the car has energy due to its state of motion. This type of energy is called: A) Potential energy. B) Kinetic energy. C) Work. D) Power. Show Answer Correct Answer: B) Kinetic energy. 18. When a car breaks to a stop, all its kinetic energy is converted to ..... A) Stopping Energy. B) Potential Energy. C) Chemical Energy. D) Heat through friction. E) Nuclear Energy. Show Answer Correct Answer: D) Heat through friction. 19. Peter does 3, 000 joules (J) of work by moving an object 40 meters (m). What is the force that Peter applies to the object? A) 75 N. B) 2, 960 N. C) 3, 040 N. D) 120, 000 N. Show Answer Correct Answer: A) 75 N. 20. Qn 2-When a heavy and a light ball is dropped at the same time and with the same velocity, once they collide in air which ball bounces back to a greater height? A) Lighter ball. B) Heavier ball. C) Both will bounce till the same height. D) Not enough data. Show Answer Correct Answer: A) Lighter ball. 21. What are the conditions for work to be done? A) A force must be applied to the object. B) The object must be displaced in the same direction as the force. C) Both A and B. D) Neither A nor B. Show Answer Correct Answer: C) Both A and B. 22. What do you need to calculate work done? A) Force and time. B) Force and distance. C) Mass and speed. D) Time and speed. Show Answer Correct Answer: B) Force and distance. 23. The energy put into a system/object is equal to: A) The mechanical energy of the object. B) The work done on the system/object. C) The energy output of the system. D) All of the above. Show Answer Correct Answer: D) All of the above. 24. You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work? A) Yes, work was done. B) No, work wasn't done. C) All the above. D) None of the above. Show Answer Correct Answer: B) No, work wasn't done. 25. Which of the following statements about mechanical advantage is true? A) It is a measure of how much work is done. B) It depends on the type of machine used. C) It is the ratio of output force to input force. D) It is always greater than 1. Show Answer Correct Answer: C) It is the ratio of output force to input force. ← 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