This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 48 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 48 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. State true or false:According to Equivalence of Mass and Energy, it states that mass and energy are NOT interconvertible. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 2. Which of the following situations shows that work is done on an object or a person? A) A big box is dragged across the floor. B) A stone is whirled around a horizontal circle. C) A stack of books is carried across a room. D) A mother is dancing with her baby in her arms. Show Answer Correct Answer: A) A big box is dragged across the floor. 3. When an object is raised to a certain height, what happens to its potential energy? A) It decreases. B) It remains constant. C) It increases. D) It depends on the mass of the object. Show Answer Correct Answer: C) It increases. 4. To complete a project 200, 000 Joules of work are needed. The time taken to coplete the project is 20 seconds. What number goes with w? A) W=20 seconds. B) W=10 Watts. C) W=200, 000 Joules. D) W=10, 000 Joules. Show Answer Correct Answer: C) W=200, 000 Joules. 5. The rate of energy transfer is equivalent to: A) Force. B) Work. C) Power. D) Distance. Show Answer Correct Answer: C) Power. 6. What is the significance of the Work-Energy Theorem in physics? A) It outlines the principles of quantum mechanics. B) It explains the conservation of mass in chemical reactions. C) It describes the relationship between temperature and pressure. D) The Work-Energy Theorem is significant because it connects work and energy, allowing for easier analysis of motion and forces. Show Answer Correct Answer: D) The Work-Energy Theorem is significant because it connects work and energy, allowing for easier analysis of motion and forces. 7. What is the product of force and displacement called? A) Energy. B) Power. C) Work. D) Momentum. Show Answer Correct Answer: C) Work. 8. An object of mass 1 kg is dropped from a top of a tower. How will the graph its mechanical energy vs height from the ground look like? A) Straight line parallel to X axis. B) Straight line with positive slope. C) Straight line with negative slope. D) Increasing curve. Show Answer Correct Answer: A) Straight line parallel to X axis. 9. What type of energy is stored in an object due to its position? A) Kinetic Energy. B) Potential Energy. C) Mechanical Energy. D) Electric Potential Energy. Show Answer Correct Answer: B) Potential Energy. 10. In case of negative work done, the angle between the force and displacement is: A) 0$^{o}$. B) 90$^{o}$. C) 180$^{o}$. D) 60$^{o}$. Show Answer Correct Answer: C) 180$^{o}$. 11. What unit is work measured in? A) Kilogram (kg). B) Newton (N). C) Watt (W). D) Joule (J). Show Answer Correct Answer: D) Joule (J). 12. A moving car has kinetic energy and speeds up until it's going 4 times as fast. It has ..... times more kinetic energy. A) 2. B) 3. C) 4. D) 5. Show Answer Correct Answer: C) 4. 13. What is the unit of work in the International System of Units? A) Pascal. B) Watt. C) Joule. D) Newton. Show Answer Correct Answer: C) Joule. 14. If a work done by a crane is 1000 J to lift up a load in 2 minutes.Calculate the power of the crane. A) 500 W. B) 8.33 W. C) All the above. D) None of the above. Show Answer Correct Answer: B) 8.33 W. 15. Which scenario describes work being done? A) Holding a heavy box stationary. B) Pushing against a locked door. C) Pulling a wagon downhill. D) Carrying a backpack while standing still. Show Answer Correct Answer: C) Pulling a wagon downhill. 16. What two factors affect an object's potential energy? A) Area and volume. B) Area and height. C) Mass and height. D) Mass and velocity. Show Answer Correct Answer: C) Mass and height. 17. What is the total energy of a mass of 1.5 kg on a table 100 cm high? A) 1 500 J. B) 150 J. C) 15 J. D) 1.5 J. Show Answer Correct Answer: C) 15 J. 18. A toy baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby has a mass of 200 grams. How much potential energy does the baby carriage+ baby system have? A) .42 J. B) 4.2 J. C) 42 J. D) 42000 J. Show Answer Correct Answer: C) 42 J. 19. A ball is dropped on to the ground from a height 1m, The Coefficient of restitution is 0.6 To what height will the ball rebound A) 0.24m. B) 0.36m. C) 0.44m. D) 0.66m. Show Answer Correct Answer: B) 0.36m. 20. Potential or kinetic?Stretched bow and arrow? A) Kinetic. B) Potential. C) All the above. D) None of the above. Show Answer Correct Answer: B) Potential. 21. A crane takes 2.0 minutes to lift a load to the top of a building. The change in gravitational potential energy of the load is 360 kJ. What is the useful power output of the crane? A) 3.0 kW. B) 180 kW. C) 720 kW. D) 43200 kW. Show Answer Correct Answer: A) 3.0 kW. 22. On a roller coaster, where is maximum kinetic energy? A) At the bottom of a big hill. B) When going around a corner. C) When going upside down. D) At the top of a big hill. Show Answer Correct Answer: A) At the bottom of a big hill. 23. A bowling ball with 1200 J of gravitational potential energy falls and ends on the ground. What is the work done? A) +1200 J. B) -1200 J. C) 0 J. D) -600 J. Show Answer Correct Answer: B) -1200 J. 24. Near the end of the shockwave ride, a braking system exerts an applied force upon the coaster car to bring it to a stop. Determine the work of the indicated force. A) No Work. B) Positive Work. C) Negative Work. D) Maximum Work. Show Answer Correct Answer: C) Negative Work. 25. Two bodies of masses m$_{1}$ and m$_{2}$ are moving with velocities v$_{1}$ and v$_{2}$ respectively. The ratio of their kinetic energies is given by: A) M$_{1}$v$_{1}$:m$_{2}$v$_{2}$. B) M$_{1}$v$_{1}$$^{2}$:m$_{2}$v$_{2}$$^{2}$. C) M$_{1}$$^{2}$v$_{1}$:m$_{2}$$^{2}$v$_{2}$. D) M$_{1}$v$_{2}$:m$_{2}$v$_{1}$. Show Answer Correct Answer: B) M$_{1}$v$_{1}$$^{2}$:m$_{2}$v$_{2}$$^{2}$. ← 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