This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 54 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 54 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 1 Joule can be defined as work done by A) A force of 1 N which results in a displacement of 1 m in the direction of force. B) A force of 1 N which results in a displacement of 1 cm in the direction of force. C) A force of 1 N which results in a displacement of 10 m in the direction of force. D) A force of 1 N which results in a displacement of 1 km in the direction of force. Show Answer Correct Answer: A) A force of 1 N which results in a displacement of 1 m in the direction of force. 2. A stone is thrown vertically upward with a velocity v, the kinetic energy at the highest point is- A) 1/2mv$^{2}$. B) Zero. C) 2(1/2mv$^{2}$). D) 2mgh. Show Answer Correct Answer: B) Zero. 3. An airplane passenger carries a 215-N suitcase up the stairs, a displacement of 4.20 m vertically and 4.60 m horizontally. How much work does the passenger do on the suitcase. A) 903 J. B) 989 J. C) 976 J. D) 945 J. Show Answer Correct Answer: A) 903 J. 4. Why does a rubberband that is flung after stretching it not move as far as energy models would predict? A) Energy is lost as heat due to air resistance and internal friction within the rubber band. B) The rubberband is too light. C) The rubberband is not stretched enough. D) The rubberband is too heavy. Show Answer Correct Answer: A) Energy is lost as heat due to air resistance and internal friction within the rubber band. 5. While releasing the arrow from a stretched bow, the potential energy of the bow is converted into A) Chemical Energy. B) Kinetic Energy. C) Sound Energy. D) Heat Energy. Show Answer Correct Answer: B) Kinetic Energy. 6. Devon and Shahrul are loading identical cement blocks onto Shahrul's pickup truck. Devon lifts his block straight up from the ground to the truck, whereas Shahrul slides his block up a ramp on massless, frictionless rollers. Which statement is true? A) Devon does more work than Shahrul. B) Devon and Shahrul do the same amount of work. C) Shahrul does more work than Devon. D) None of these statements is true. Show Answer Correct Answer: B) Devon and Shahrul do the same amount of work. 7. How far will an object move in 12 seconds if it is traveling at a velocity of 8 m/s? A) 96 m. B) 0.7 m. C) 20 m. D) 4 m. Show Answer Correct Answer: A) 96 m. 8. In order to do work, energy is A) Lost. B) Transferred or converted. C) Used up. D) None of the above. Show Answer Correct Answer: B) Transferred or converted. 9. Conservation of mechanical energy in an isolated system is only subject to conservative forces. Which of the following is an example of a conservative force? A) Air Resistance. B) Friction. C) Gravity. D) Tension. Show Answer Correct Answer: C) Gravity. 10. A weightlifter holds a 100 kg barbell above her head. Is work done? A) Yes because there is a force applied to the barbell and the force causes a displacement of the barbell. B) Yes because there is an upward force applied to the barbell and the barbell moves vertically. C) No because no displacement occurred. D) No because there is no force applied. Show Answer Correct Answer: C) No because no displacement occurred. 11. What two forms of energy come from the sun? A) Nuclear and gravitational. B) Thermal and radiant. C) Electrical and thermal. D) Mechanical and sound. Show Answer Correct Answer: B) Thermal and radiant. 12. A 2kg ball and a 5kg are thrown off the side of a 5m high building.Which ball will hit the ground with more energy? A) 2kg Ball. B) 5kg Ball. C) Both will hit the ground with the same energy. D) None of the above. Show Answer Correct Answer: B) 5kg Ball. 13. An object has 100 J of kinetic energy. If the velocity increases by a factor 5, then what is the new kinetic energy? A) 2500 J. B) 500 J. C) 20 J. D) 4 J. Show Answer Correct Answer: A) 2500 J. 14. Dry cell converts- A) Mechanical energy into electrical energy. B) Electrical energy into chemical energy. C) Chemical energy into muscular energy. D) Chemical energy into electrical energy. Show Answer Correct Answer: D) Chemical energy into electrical energy. 15. When you stretch a rubber band, you are storing ..... energy. A) Kinetic. B) Potential. C) None of the above. D) All of the above. Show Answer Correct Answer: B) Potential. 16. What is the principle of conservation of energy principle? A) Energy can be created and destroyed. Energy can be transferred from one another. B) Energy can be created but it cannot be destroyed. Energy can be transferred from one another. C) Energy can be transferred from other forms and other object. Energy cannot be created or destroyed. D) Total energy for the system is not constant, It will depends on the value of gravitational energy and kinetic energy. Show Answer Correct Answer: C) Energy can be transferred from other forms and other object. Energy cannot be created or destroyed. 17. Two army persons A and B each of weight of 500 N climb up a rope through a height of 10 m. A takes 20 s while B takes 40 s to achieve this task. What is ratio of the powers of person A and B? A) 1:2. B) 1:4. C) 2:1. D) 14:1. Show Answer Correct Answer: C) 2:1. 18. A water balloon is launched off a building. Where in its trajectory does it have the most kinetic energy? A) As soon as it is released. B) At the peak of its trajectory. C) Just before it hits the ground. D) Once it comes to rest on the ground. Show Answer Correct Answer: C) Just before it hits the ground. 19. How much work is done if Seth moves a 20 N boulder 4m? A) 80J. B) 80W. C) 5J. D) 5W. Show Answer Correct Answer: A) 80J. 20. If displacement is in the direction of force, then work is ..... A) Negative. B) Positive. C) Zeor. D) None of the above. Show Answer Correct Answer: B) Positive. 21. A man pushes a crate along a factory floor by exerting a force of 55N. If the crate moves a distance of 4m, how much work does the man perform? A) 550J. B) 2200J. C) 220N. D) 220J. Show Answer Correct Answer: D) 220J. 22. Based on the formula for potential energy, what 2 variables influence PE the most? A) Mass and height. B) Mass and velocity. C) Velocity and height. D) Velocity and mass. Show Answer Correct Answer: A) Mass and height. 23. A spring 40 mm long is stretched by the application of a force. If 10N force is required to stretch the spring through 1mm, then work done in stretching the spring is(if T is tension in the spring and k is spring constant) A) T$^{2 }$/ 2. B) T$^{2 }$/ 2k. C) 2k / T$^{2 }$. D) 2T$^{2 }$/ k. Show Answer Correct Answer: B) T$^{2 }$/ 2k. 24. What happens to the kinetic and potential energy in a conservative system? A) They convert into each other, keeping the total energy constant. B) They decrease over time. C) They increase over time. D) They remain constant. Show Answer Correct Answer: A) They convert into each other, keeping the total energy constant. 25. A boy lifts a box of mass 4 kg to a height of 200 cm. How much energy does the box gain? A) 80 J. B) 8 J. C) 8000 J. D) Zero. Show Answer Correct Answer: A) 80 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