This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the sign of the work done by gravity on a man standing on a platform? A) Zero. B) Positive. C) Negative. D) None of the above. Show Answer Correct Answer: A) Zero. 2. The Law of Conservation of Energy states that total amount of energy in a closed system will always A) Stay the same. B) Increase. C) Decrease. D) Cannot be determined. Show Answer Correct Answer: A) Stay the same. 3. A moving car hits an identical car at rest and move together afterwards. What can be concluded about the velocity of the first car before the collision as compared to the velocity of the combined cars after the collision? A) Larger. B) Smaller. C) The same. D) Zero. Show Answer Correct Answer: A) Larger. 4. Work is NOT done when ..... A) A boy pushes on a parked car. B) A girl lifts a book off the floor. C) A man pushes a box across the carpet. D) Friction causes a ball to stop rolling. Show Answer Correct Answer: A) A boy pushes on a parked car. 5. Power is defined as the quantity that measures the rate at which ..... is done or energy is transformed. A) Energy. B) Time. C) Work. D) Elasticity. Show Answer Correct Answer: C) Work. 6. Force is a ..... or ..... A) Simple complex. B) Push pull. C) Up down. D) In out. Show Answer Correct Answer: B) Push pull. 7. As an object is lowered into a deep hole in the surface of the Earth, which of the following must be assumed with regard to its potential energy? A) It increases. B) It decreases. C) It remains constant. D) One cannot tell. Show Answer Correct Answer: B) It decreases. 8. Which of the following is not a unit of energy? A) Joule. B) Newton-meter. C) Watt-hour. D) Ampere. Show Answer Correct Answer: D) Ampere. 9. What is the relationship between kinetic energy and velocity? A) Kinetic energy is directly proportional to velocity. B) Kinetic energy is inversely proportional to velocity. C) Kinetic energy is directly proportional to the square of velocity. D) Kinetic energy is inversely proportional to the square of velocity. Show Answer Correct Answer: C) Kinetic energy is directly proportional to the square of velocity. 10. Watt hour meter used to measure- A) Energy. B) Power. C) Voltage. D) Wattage. Show Answer Correct Answer: A) Energy. 11. A 2kg ball and a 4kg ball are released from rest at the same height at the same time. After falling for 3 seconds, both balls have the same ..... A) Position. B) Velocity. C) Acceleration. D) All of the above. Show Answer Correct Answer: D) All of the above. 12. Explain the work-energy theorem in your own words. A) The work-energy theorem only applies to objects at rest. B) The work-energy theorem states that energy cannot be created or destroyed. C) The work-energy theorem relates the work done on an object to its change in kinetic energy. D) The work-energy theorem describes the relationship between potential energy and temperature. Show Answer Correct Answer: C) The work-energy theorem relates the work done on an object to its change in kinetic energy. 13. How much work is done if a boy pulls a sled 2 m with a force of 20 N? A) 10 J. B) 40 J. C) 22 J. D) 12 J. Show Answer Correct Answer: B) 40 J. 14. Energy is the rate at which work is done A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. What is the standard unit used to express work? A) Joule. B) Newton. C) Watt. D) None of the above. Show Answer Correct Answer: A) Joule. 16. Saul and Martin both do 100, 000 J of work when jogging. Saul does it in 80 seconds and Martin does it in 75 seconds. Who has more power and why? A) Saul, because he does it in less time. B) Martin, because he does it in less time. C) Saul, because he does it in more time. D) Martin, because he does it in more time. Show Answer Correct Answer: B) Martin, because he does it in less time. 17. You do work when you glide (not pushing) across the ice while ice skating. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. Energy is measured in: A) Newtons. B) Joules. C) Watts. D) Volts. Show Answer Correct Answer: B) Joules. 19. ..... is the rate at which work is done A) Power. B) Energy. C) Force. D) Time. Show Answer Correct Answer: A) Power. 20. Energy cannot be ..... or ..... A) Big/small. B) Left/right. C) Created/destroyed. D) Made/transferred. Show Answer Correct Answer: C) Created/destroyed. 21. The application of a force that causes the body to move in the direction of the force is called A) Power. B) Work. C) Energy. D) Efficiency. Show Answer Correct Answer: B) Work. 22. When force is 5 N and displacement is 20 m. what is the work done? A) 100 J. B) 100 N. C) 10 Nm. D) Both A and B. Show Answer Correct Answer: A) 100 J. 23. Rohan, Aiden, and Lily are playing with a ball on a hill. The energy stored in the ball due to its position on the hill is called A) Potential energy. B) Kinetic energy. C) Work. D) Power. Show Answer Correct Answer: A) Potential energy. 24. Which of the following is the S.I. unit for Power? A) Watts. B) Joules. C) Newtons. D) None of the above. Show Answer Correct Answer: A) Watts. 25. Joey pushes a box horizontally for 2 m with a horizontal force of 10N. How much work did he do? A) 0 J. B) 5 J. C) 10 J. D) 20 J. Show Answer Correct Answer: D) 20 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