This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How much time is needed to produce 720 Joules of work if 90 watts of power is used? A) 64800 sec. B) 6 sec. C) 7 sec. D) 8 sec. Show Answer Correct Answer: D) 8 sec. 2. How far will 350 J of work raise a 70 N block of chocolate? A) 5 m. B) 25 m. C) 100 N. D) 5 W. Show Answer Correct Answer: A) 5 m. 3. If a machine is lubricated with oil A) The mechanical advantage of the machine increases. B) The mechanical efficiency of machine increases. C) Both mechanical efficiency and advantage increases. D) Its efficiency increases but advantage decreases. Show Answer Correct Answer: B) The mechanical efficiency of machine increases. 4. A spring when compressed by 4 cm has 2 J energy stored in it. The force required to extend it by 8 cm will be A) 20 N. B) 2 N. C) 200 N. D) 2000 N. Show Answer Correct Answer: C) 200 N. 5. Four students are pushing on one side of a desk. Colin is pushing to the west, Zoey is pushing to the east, Will is pushing to the north, and Kylee is pushing to the south. If the desk moves to the north, which student does work on the desk? A) Colin. B) Zoey. C) Will. D) Kylee. Show Answer Correct Answer: C) Will. 6. Which situation is work not done? A) Lifting a 20 pound box off the floor. B) Holding a 20 pound box above the floor. C) Sliding a 20 pound box across the floor. D) Sliding a 20 pound box up an inclined plane. Show Answer Correct Answer: B) Holding a 20 pound box above the floor. 7. Two people push on a wall with 100 N. The wall doesn't move. How much work is done? A) 100J. B) 100N. C) 0J. D) 0N. Show Answer Correct Answer: C) 0J. 8. What is being transferred as you do work? A) Energy. B) Heat. C) Power. D) Gravitational Potential Energy. Show Answer Correct Answer: A) Energy. 9. Height and gravitational potential energy have a ..... relationship. A) Difficult. B) Reverse. C) Inverse. D) Direct. Show Answer Correct Answer: D) Direct. 10. A Mustang has more horsepower than your mom's minivan. What does this mean? A) The Mustang has a higher topspeed. B) The minivan has a worse gas mileage. C) The Mustang can do work faster. D) The Mustang will die. Show Answer Correct Answer: C) The Mustang can do work faster. 11. If a new fork lift can do the four times the amount of work in the same amount of time of an old forklift, then the new forklift is ..... A) Twice as powerful. B) Four time as powerful. C) Sixteen times the power. D) Of equal power of the old forklift. Show Answer Correct Answer: B) Four time as powerful. 12. How does mass affect kinetic energy? A) Mass has no effect on kinetic energy. B) Kinetic energy is only affected by velocity. C) Increasing mass decreases kinetic energy. D) Mass directly affects kinetic energy; increasing mass increases kinetic energy if velocity is constant. Show Answer Correct Answer: D) Mass directly affects kinetic energy; increasing mass increases kinetic energy if velocity is constant. 13. If you do 100 J of work to lift a TV up to the second floor, how much work would it take to lift the TV up to the 4th floor? A) 100 J. B) 200 J. C) 300 J. D) 400 J. Show Answer Correct Answer: C) 300 J. 14. A machine raises a load of 750N through a height of 16 min 5 s .Calculate the power at which machine works. A) 24kW. B) 2.4kW. C) 2.4KW. D) None of the above. Show Answer Correct Answer: B) 2.4kW. 15. When is work done on an object? A) When a force is applied to an object and the object remains stationary. B) When a force is applied to an object and the object moves in the same direction as the force. C) When the frictional force on an object is greater than a force applied to the object. D) When two forces of equal magnitude are applied to the object in opposite directions. Show Answer Correct Answer: B) When a force is applied to an object and the object moves in the same direction as the force. 16. A box of clothes with a mass of 55 kg has 15000 J of potential energy. What is the height of the box of clothes? A) 27.27 meters. B) 272.72 meters. C) 2, 727.27 meters. D) 8250000 meters. Show Answer Correct Answer: A) 27.27 meters. 17. What is conversion of energy takes place while charging a cell/battery A) Chemical energy to Light energy. B) Light energy to Chemical energy. C) Electrical energy to Chemical energy. D) Chemical energy to Electrical energy. Show Answer Correct Answer: C) Electrical energy to Chemical energy. 18. Kinetic energy is possessed by a body due to i A) State of strain. B) Its position. C) Its motion. D) Distance. Show Answer Correct Answer: C) Its motion. 19. Potential energy is associated with ..... A) Speed. B) Position. C) Direction. D) Temperature. Show Answer Correct Answer: B) Position. 20. If the books is carried by a force which acts at rightangles to the motion, what is the work done? A) Work done is maximum. B) No work is done on thebooks. C) Work done is 90J. D) Work done is minimum. Show Answer Correct Answer: B) No work is done on thebooks. 21. How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s? A) 400 W. B) 1000 W. C) 1600 W. D) 4000 W. Show Answer Correct Answer: B) 1000 W. 22. A girl pushes a lawn mower with a force of 50N a distance of 100m in 500s. How much power did the girl have? A) 10 W. B) 5000 W. C) 0.5 W. D) 1000 W. Show Answer Correct Answer: A) 10 W. 23. What is the difference between positive work and negative work? A) Negative work is only done by friction. B) Positive work adds energy to an object, while negative work removes energy from it. C) Positive work is always greater than negative work. D) Positive work can only occur in a vacuum. Show Answer Correct Answer: B) Positive work adds energy to an object, while negative work removes energy from it. 24. What is the formula for Kinetic Energy? A) PE = m*g*h. B) KE = 1/2*m*v2. C) W = F*d. D) P = W/t. Show Answer Correct Answer: B) KE = 1/2*m*v2. 25. A 5.5 kg cat jumps from the floor onto a table at a height of 100 cm. Determine the potential energy gained by the cat. A) 53.96 J. B) 5395.5 J. C) 539.6 J. D) 5.4 J. Show Answer Correct Answer: A) 53.96 J. ← 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