This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Potential energy is expressed in joules A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. If a system is isolated, the total energy of the system A) Increases constantly. B) Decreases constantly. C) Is constant. D) Depends on the work done on the system. E) Depends on the work done by the system. Show Answer Correct Answer: C) Is constant. 3. What should be the angle between the forces and displacement to get maximum and minimum work A) 90, 0 degree. B) 0, 90 degree. C) 90, 180 degree. D) None of the above. Show Answer Correct Answer: A) 90, 0 degree. 4. A constant force acting over a given distance requires A) Constant Power. B) Increasing Power. C) Decreasing Power. D) None of the above. Show Answer Correct Answer: B) Increasing Power. 5. What is the kinetic energy of a 2 kg object moving at a velocity of 3 m/s? A) 3 Joules. B) 6 Joules. C) 9 Joules. D) 18 Joules. Show Answer Correct Answer: C) 9 Joules. 6. A construction worker does 270 J of work, lifting 90 N of hollow blocks up a ladder. How high did he climb up? A) 1m. B) 2m. C) 3m. D) 4m. Show Answer Correct Answer: C) 3m. 7. Having the same amount of work done means you will have the same amount of Power A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 8. How much force is used when 350 J is produced to move a car 5 m? A) 70 N. B) 17500 N. C) 355 N. D) 175 N. Show Answer Correct Answer: A) 70 N. 9. As the sun went down, the house became dark and Kyle turned on the lights. Which statement is true about power? A) The power of the light Kyle turned on is used to exert force. B) The power of the light Kyle turned on is the amount of energy transferred per time. C) The power of the light Kyle turned on can be calculated using force and distance. D) None of the above. Show Answer Correct Answer: B) The power of the light Kyle turned on is the amount of energy transferred per time. 10. Power is defined as the rate of doing work. What is the SI unit of power? A) Joule. B) Watt. C) Newton. D) Volt. Show Answer Correct Answer: B) Watt. 11. A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used? A) 360 W. B) 60 W. C) 3600 W. D) 600 W. Show Answer Correct Answer: A) 360 W. 12. Energy is the ability to apply force to cause movement in the direction of the what? A) Object. B) Force. C) Motion. D) None of the above. Show Answer Correct Answer: B) Force. 13. Kinetic energy is the energy of ..... A) Distance. B) Motion. C) Work. D) Roman. Show Answer Correct Answer: B) Motion. 14. What is the most common symbol for heat in thermodynamics? A) W. B) H. C) E. D) Q. Show Answer Correct Answer: D) Q. 15. A crane does work of 13, 500 J with a force of 5200 N to lift a beam. How far can the beam be lifted (in meters)? A) 702 M. B) 70200000 m. C) 2.6 m. D) 26 M. Show Answer Correct Answer: C) 2.6 m. 16. A boy pushes a lever down 2 meters with a force of 78 N, the box at the other end with a weight of 50 N moves up 2.5 meters. What is the percent efficiency? A) 80.13%. B) 124.8%. C) 100%. D) 40%. Show Answer Correct Answer: A) 80.13%. 17. What is the definition for kinetic energy? A) The energy of motion (due to mass and velocity). B) Stored energy due to position. C) Energy at the top of a hill. D) None of the above. Show Answer Correct Answer: A) The energy of motion (due to mass and velocity). 18. How does the concept of power relate to work and energy? A) Power is the distance covered per unit of energy. B) Power measures the rate of doing work. C) Power is the ability to exert forces. D) Power is a type of potential energy. Show Answer Correct Answer: B) Power measures the rate of doing work. 19. What is equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt? A) Joule. B) Efficiency. C) Watt. D) Mechanical Advantage. Show Answer Correct Answer: C) Watt. 20. Work is defined as: A) The energy transferred by a force acting over a distance. B) The force applied perpendicular to the direction of motion. C) The rate of change of energy over time. D) The force applied over a unit time. Show Answer Correct Answer: A) The energy transferred by a force acting over a distance. 21. What type of prehistoric environment did coal form from? A) Oceans. B) Forrests. C) Swamps. D) Desert. Show Answer Correct Answer: C) Swamps. 22. A 70.0 kg base runner moving at a speed of 4.0 m/s begins his slide into second base. The coefficient of friction between his clothes and Earth is 0.70. His slide lowers his speed to zero just as he reaches the base.How far does the runner slide? A) 0.29 m. B) 0.57 m. C) 0.86 m. D) 1.2 m. Show Answer Correct Answer: D) 1.2 m. 23. Stored energy is called A) Kinetic Energy. B) Potential Energy. C) Nuclear Energy. D) Heat Energy. Show Answer Correct Answer: B) Potential Energy. 24. Which type of energy is stored in the bonds between atoms? A) Thermal energy. B) Chemical energy. C) Potential energy. D) Kinetic energy. Show Answer Correct Answer: B) Chemical energy. 25. If speed of a car becomes 2 times then it's kinetic energy is A) 4 times. B) 8 times. C) 16 times. D) 12 times. Show Answer Correct Answer: A) 4 times. ← 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 10Class 11 Physics (Part I) Chapter 4 Work Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books