This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Energy transferred can be calculated by: A) Multiplying power by distance. B) Dividing force by time. C) Multiplying force by distance. D) Dividing work by force. Show Answer Correct Answer: C) Multiplying force by distance. 2. Bobby lifts a book to the second floor in 20 seconds. Carol lifts the same book to the second floor in 10 seconds. Who did more work? A) Bobby. B) Carol. C) They did the same amount of work. D) Not enough information. Show Answer Correct Answer: C) They did the same amount of work. 3. Energy is the ability to do work or cause ..... A) Events. B) Change. C) Friction. D) Explosions. Show Answer Correct Answer: B) Change. 4. ES = 1/2 k $\Delta$x2 The above is the formula for Elastic Energy. What is an example of an elastic energy? A) Holding a weight above the head. B) Speed of sprint runner. C) Stretching spring weights. D) Holding a weight above the head. Show Answer Correct Answer: C) Stretching spring weights. 5. Which of the following devices transforms electrical energy into mechanical energy? A) An e-reader. B) A fan. C) A manual pencil sharpener. D) Ipod. Show Answer Correct Answer: B) A fan. 6. Energy due to an object's position is called ..... energy. A) Kinetic. B) Gravitational potential. C) Chemical. D) Power. Show Answer Correct Answer: B) Gravitational potential. 7. 50 J of work is done lifting a 20.0 N book in the air. How high was it lifted? A) 2.5 m. B) 3.5 m. C) 0.4 m. D) 25 m. Show Answer Correct Answer: A) 2.5 m. 8. A forces applied when the objects involved are in direct contact. A) Contact forces. B) Normal forces. C) Non-contact forces. D) None of the above. Show Answer Correct Answer: A) Contact forces. 9. Which of the following is NOT a measure of power? A) Joule per second. B) Newtown meter per second. C) Kilogram meter per second. D) Kilogram meter squared per second squared. Show Answer Correct Answer: C) Kilogram meter per second. 10. If you perform 1, 000 J of work moving a mattress 5 m, how much does it weigh? A) 50 J. B) 20 N. C) 200 N. D) 6 W. Show Answer Correct Answer: C) 200 N. 11. On a roller coaster, where is maximum potential 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: D) At the top of a big hill. 12. A 45 kg stone is moved from a height 20 meters to 2 meters. If this is done in 10 seconds, what is the power needed to accomplish this? A) 0 watts. B) 405 watts. C) 810 watts. D) 1620 watts. Show Answer Correct Answer: C) 810 watts. 13. Define power A) Rate of doing work. B) Ability to do work. C) Force used to do work. D) Energy in doing work. Show Answer Correct Answer: A) Rate of doing work. 14. How do we calculate work? A) W = F * d. B) W = f * D. C) W = F * D. D) W = f * d. Show Answer Correct Answer: A) W = F * d. 15. A spring of force-constant k is cut into two pieces such that one piece is double the length of the other. Then the long piece will have a spring constant of A) $\frac{2}{3}k$. B) $\frac{3}{2}k$. C) 3k. D) 6k. Show Answer Correct Answer: B) $\frac{3}{2}k$. 16. A twig from a tree drops from a 200m high cliff on to a beach below. During its fall, 40% of the twig's energy is converted into thermal energy.What is the speed with which the twig hits the beach? A) 35 ms$^{-1}$. B) 40 ms$^{-1}$. C) 49 ms$^{-1}$. D) 63 ms$^{-1}$. Show Answer Correct Answer: C) 49 ms$^{-1}$. 17. P=25 watts W=5000 Joules t=??? A) 200 sec. B) 0.0005 s. C) 125000 s. D) 125 s. Show Answer Correct Answer: A) 200 sec. 18. What's the symbol for displacement in the Work Formula A) S. B) D. C) D. D) S. Show Answer Correct Answer: A) S. 19. Which of these items is not part of the law of conservation of energy? A) Energy cannot be created. B) Energy cannot be destroyed. C) Energy can be transferred between forms. D) Energy is destroyed by friction. Show Answer Correct Answer: D) Energy is destroyed by friction. 20. Which of the following is a form of energy? A) Distance. B) Mass. C) Time. D) Kinetic energy. Show Answer Correct Answer: D) Kinetic energy. 21. Which of the following is NOT an example of work? A) A boy riding a bicycle on the street. B) A student walking up a flight of stairs. C) The teacher opens the door of the classroom. D) Someone pushing on a wall of a room in a building. Show Answer Correct Answer: D) Someone pushing on a wall of a room in a building. 22. A car's wheel turning while trying to get out of sticky pool of mud where it got stuck. is work done? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 23. An extension of spring is 4cm after hang a load with weight 20N.Calculate elastic potential energy of the spring. A) 0.4 J. B) 0.8 J. C) 40 J. D) 80J. Show Answer Correct Answer: A) 0.4 J. 24. The momentum of a particle is numerically equal to its kinetic energy. what is the velocity of the particle? A) 1 m/s. B) 2 m/s. C) 4 m/s. D) Momentum cannot be equal to the kinetic energy. Show Answer Correct Answer: B) 2 m/s. 25. A student slides a 0.75 kg textbook across a table, and it comes to rest after traveling 1.2 m. Using the work-energy theorem, what is the book's initial speed? (Use g = 9.8 m/s$^{2}$.) A) 4.85 m/s. B) 3.96 m/s. C) 2.97 m/s. D) 2.47 m/s. Show Answer Correct Answer: A) 4.85 m/s. ← 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 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 10Class 11 Physics (Part I) Chapter 4 Work Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books