This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A bow is drawn so that it has 40 J of potential energy. When released, the arrow will theoretically have a kinetic energy that is A) Less than 40 J. B) More than 40 J. C) 40 J. D) Impossible to predict. Show Answer Correct Answer: C) 40 J. 2. At the top of the highest point/peak on a roller coaster, how is the energy split between potential and kinetic energy? A) 100% PE, 0% KE. B) 0% PE, 100% KE. C) 50% PE, 50% KE. D) 25% PE, 75% KE. Show Answer Correct Answer: A) 100% PE, 0% KE. 3. An object has 1000 J of potential energy at top of a building 10 m high. If this object dropped from the top of this building then at a height of 5 m from ground surface, which of the statement will be true ..... A) Object possess K.E = 1000 J. B) Object possess P.E = 1000 J. C) Object Possess K.E = 500 J. D) Object Possess K.E = O. Show Answer Correct Answer: C) Object Possess K.E = 500 J. 4. Power is measured in ..... A) Meters. B) Joules. C) Newtons. D) Watts. Show Answer Correct Answer: D) Watts. 5. How much power is required to raise a 30 kg crate a vertical distance of 6 m in a time of 4 seconds? A) 120 W. B) 52.5 W. C) 450 W. D) 385 W. E) 525 W. Show Answer Correct Answer: C) 450 W. 6. What is the unit of average power in physics? A) Watts. B) Meters. C) Joules. D) Newtons. Show Answer Correct Answer: A) Watts. 7. Wind is able to turn turbine blades which spin a generator. The generator converts mechanical energy into electrical energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. Which movement will require the greatest amount of work to be done? A) A force of 10N moving an object a distance of 3.0m. B) A force of 10N moving an object a distance of 5.0m. C) A force of 15N moving an object a distance of 3.0m. D) A force of 15N moving an object a distance of 5.0m. Show Answer Correct Answer: D) A force of 15N moving an object a distance of 5.0m. 9. A man throws a baseball doing 500 J of work in 2.5 seconds. How much power did he have? A) 12500. B) 1250 W. C) 200 W. D) 200 J. Show Answer Correct Answer: C) 200 W. 10. What form of energy is present when a bow of an archer is drawn back? A) Kinetic energy. B) Chemical energy. C) Potential energy. D) Mechanical energy. Show Answer Correct Answer: C) Potential energy. 11. The Conservation law of Energy states that: "Energy cannot be ..... or ..... , it can only change from one form to another" . Fill in the blanks. A) Moved-changed. B) Moved-transformed. C) Created-destroyed. D) None of the above. Show Answer Correct Answer: C) Created-destroyed. 12. Science Steve gradually slows down the car and brings it to a complete stop as he approaches a red light with his daughter Cynthia. Is work being done on the car during the slow down? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 13. A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. What power was used? A) 457.1 W. B) 1400 W. C) .035 W. D) 28.6 W. Show Answer Correct Answer: A) 457.1 W. 14. True or false:when the distance an object moves is zero the work done on the object is also zero. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. Kinetic energy depends on the ..... and ..... of the object. A) Height and Mass. B) Spring constant and Distance away from equilibrium. C) Mass and Velocity. D) Height and Friction. Show Answer Correct Answer: C) Mass and Velocity. 16. What is an example of Potential energy? A) A diver standing on top of the diving board. B) Car merging onto the highway. C) Rollercoaster going down the hill. D) Baseball getting thrown to the home plate. Show Answer Correct Answer: A) A diver standing on top of the diving board. 17. A 5 kg mass has 100 J of potential energy with respect to the ground. Approximately how high above the ground is the mass? A) 1 m. B) 2 m. C) 3 m. D) 4 m. E) None of these. Show Answer Correct Answer: B) 2 m. 18. If 100 J of energy is transformed into work, how much energy remains? A) 50 J. B) 25 J. C) 0 J. D) 10 J. Show Answer Correct Answer: C) 0 J. 19. Which row gives the energy change in a battery and the energy change in a solar cell? A) Battery = chemical to electrical, solar cell = electrical to light. B) Battery = chemical to electrical, solar cell = light to electrical. C) Battery = electrical to chemical, solar cell = electrical to light. D) Battery = electrical to chemical, solar cell = light to electrical. Show Answer Correct Answer: B) Battery = chemical to electrical, solar cell = light to electrical. 20. If you do 100 J of work to lift a TV up to the 2nd floor, how much potential energy will the TV have? A) 100 J. B) 200 J. C) 300 J. D) Impossible to tell. Show Answer Correct Answer: A) 100 J. 21. A force of 1500 N is applied during the drive off from a sprint start. The centre of mass moves a distance 0.4 m. What work is done? A) 1200 J. B) 1500 J. C) 3750 J. D) 600 J. Show Answer Correct Answer: D) 600 J. 22. Power can be calculated from energy and what? A) Time. B) Work. C) Force. D) None of the above. Show Answer Correct Answer: A) Time. 23. What happens when work is done on an object? A) The object loses mass. B) Energy is transferred to the object. C) The object's temperature always increases. D) The object's volume changes. Show Answer Correct Answer: B) Energy is transferred to the object. 24. An escalator in an underground station has 250 people standing on it and is moving with a velocity of 4.3 ms$^{-1}$. The average mass of a person is 78 kg and the angle of the escalator to the horizontal is 40$^{o}$.What is the minimum power required to lift these people? A) 54kW. B) 64kW. C) 530kW. D) 630kW. Show Answer Correct Answer: C) 530kW. 25. Which of the following is NOT work? A) A change in potential energy. B) A change in kinetic energy. C) A Force acting over a distance. D) A change in mass. Show Answer Correct Answer: D) A change in mass. ← 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