This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A major league pitcher can throw a baseball with a kinetic energy of 150J. How much work must the pitcher do to the ball to give it that much kinetic energy A) 50J. B) 0 J. C) 150 J. D) 300 J. Show Answer Correct Answer: C) 150 J. 2. Describe a real-life example of energy conservation. A) Using high-energy appliances for daily tasks. B) Using energy-efficient LED light bulbs instead of incandescent bulbs. C) Leaving lights on in unoccupied rooms. D) Using traditional incandescent bulbs for lighting. Show Answer Correct Answer: B) Using energy-efficient LED light bulbs instead of incandescent bulbs. 3. A 47kg ballet dancer leaps across the floor at 1m/s. How much kinetic energy does she have? A) 23.5 J. B) 53.8 J. C) 94 J. D) 123 J. Show Answer Correct Answer: A) 23.5 J. 4. Which of the following is defined as an energy transfer? A) Kinetic energy. B) Work. C) Potential energy. D) Chemical energy. Show Answer Correct Answer: B) Work. 5. Newtons are the unit for ..... A) Work. B) Distance. C) Acceleration. D) Force. Show Answer Correct Answer: D) Force. 6. What is the significance of the conservation of energy principle? A) Energy can be created and destroyed. B) Energy can only be transformed from one form to another. C) Energy is a finite resource that can be depleted. D) Energy can be transferred but not transformed. Show Answer Correct Answer: B) Energy can only be transformed from one form to another. 7. A car, travelling on a straight horizontal road, has 1.6 MJ of kinetic energy. It accelerates for 20 s until it has 2.5 MJ of kinetic energy. What is the average power output used to increase the kinetic energy of the car? A) 45 W. B) 205 W. C) 45 kW. D) 205 kW. Show Answer Correct Answer: C) 45 kW. 8. What happens to energy in a swinging pendulum at its highest point? A) Maximum kinetic energy, zero potential energy. B) Maximum potential energy, zero kinetic energy. C) Equal potential and kinetic energy. D) No energy at all. Show Answer Correct Answer: B) Maximum potential energy, zero kinetic energy. 9. What is the equation used for calculating power from force and velocity A) Power = force/velocity. B) Power = force * velocity. C) Power = force + velocity. D) Power = velocity / force. Show Answer Correct Answer: B) Power = force * velocity. 10. The following are conservative force except A) Frictional force. B) Gravitational force. C) Spring force. D) None of the option. Show Answer Correct Answer: A) Frictional force. 11. Explain the principle of conservation of energy. A) Energy is only lost during transformations. B) Energy can be created from nothing. C) Total energy in a closed system can increase over time. D) Energy cannot be created or destroyed, only transformed; total energy in a closed system remains constant. Show Answer Correct Answer: D) Energy cannot be created or destroyed, only transformed; total energy in a closed system remains constant. 12. If 2.0 J of work is done in raising a 180 g apple, how far is it lifted? (Use g = 9.8 m/s$^{2}$.) A) 1.11 x 10$^{-2}$ m. B) 1.13 m. C) 11.11 m. D) 90 m. Show Answer Correct Answer: B) 1.13 m. 13. What is the unit of power in the International System of Units (SI)? A) Watt. B) Joule. C) Newton. D) Pascal. Show Answer Correct Answer: A) Watt. 14. What is the SI unit of power? A) Volt (V). B) Newton (N). C) Watt (W). D) Joule (J). Show Answer Correct Answer: C) Watt (W). 15. What is power in terms of work and time? A) Power = Work + Time. B) Power = Time / Work. C) Power = Work-Time. D) Power = Work / Time. Show Answer Correct Answer: D) Power = Work / Time. 16. How much work is done to slow a 800kg car from 20m/s to 5m/s A) 150 kj. B) 400 kj. C) 15 kj. D) 90 kj. Show Answer Correct Answer: A) 150 kj. 17. In a marathon, the winner and the runner-up have the same mass. Compared with the runner-up, the winner has more ..... A) Energy. B) Force. C) Power. D) Work. Show Answer Correct Answer: C) Power. 18. The kinetic energy of a car moving at constant velocity v is K. The velocity of the car changes to 2v. What is the new kinetic energy of the car? A) $\frac{1}{4}K$. B) $\frac{1}{2}K$. C) 2K. D) 4K. Show Answer Correct Answer: D) 4K. 19. Work done = Force x blank? A) Distance. B) Acceleration. C) Velocity. D) Speed. Show Answer Correct Answer: A) Distance. 20. Work is measured in which unit? A) Kilogram. B) Joule. C) Newton. D) Watt. Show Answer Correct Answer: B) Joule. 21. What is the relationship between work done and energy transfer? A) They are opposite quantities. B) Work done is always less than energy transferred. C) They are equivalent quantities. D) Work done is always more than energy transferred. Show Answer Correct Answer: C) They are equivalent quantities. 22. Which of the following is a measure of power? A) 100 watts. B) 100 joules. C) 100 newtons. D) 100 meters per second. Show Answer Correct Answer: A) 100 watts. 23. Both work and energy are ..... quantities. A) Vector. B) Scalar. C) Numerical. D) Physical. Show Answer Correct Answer: B) Scalar. 24. What is the kinetic energy of an 9 kg bowling ball rolling at 3.30 m/s? A) 29.7 J. B) 323.4 J. C) 49.005 J. D) 14.85 J. Show Answer Correct Answer: C) 49.005 J. 25. According to the video, what is the capacity to do work or produce heat? A) Work. B) Heat. C) Energy. D) Mass. Show Answer Correct Answer: C) Energy. ← 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