This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 4 Work – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A car engine does 5000 J of work in 10 seconds. What is the power output of the engine? A) 5 W. B) 500 W. C) 50 W. D) 5000 W. Show Answer Correct Answer: B) 500 W. 2. How does potential energy differ from kinetic energy? A) Kinetic energy is stored energy based on position. B) Potential energy is the energy of sound waves. C) Potential energy is always greater than kinetic energy. D) Potential energy is stored energy based on position; kinetic energy is energy of motion. Show Answer Correct Answer: D) Potential energy is stored energy based on position; kinetic energy is energy of motion. 3. How fast must a 1000 kg car be moving to have a kinetic energy of 400 000 J? A) 22.7 m/s. B) 28.28 m/s. C) 800 m/s. D) None of the above. Show Answer Correct Answer: B) 28.28 m/s. 4. When is work considered to be done on an object? A) All of the above. B) When the object is displaced. C) When a force is applied to the object. D) When the object changes its state of motion. Show Answer Correct Answer: A) All of the above. 5. How long will it take a moving object traveling at a velocity of 6 m/s to move 30 meters? A) 5 s. B) 24 s. C) 180 s. D) 36 s. Show Answer Correct Answer: A) 5 s. 6. What is the sum of all the system's kinetic and potential energy called? A) Chemical energy. B) Potential energy. C) Thermal energy. D) Internal energy. Show Answer Correct Answer: D) Internal energy. 7. Energy can neither be ..... nor ..... A) Added, subtracted. B) Multiplied, divided. C) Made, created. D) Created, destroyed. Show Answer Correct Answer: D) Created, destroyed. 8. The unit used to measure power is the A) Newton*meter. B) Watt. C) Newton. D) Joule. Show Answer Correct Answer: B) Watt. 9. An 80 kg skier stands at the top of a 40 meter slope. What is her gravitational potential energy before she skies down the slope? A) 15, 680 J. B) 3200 J. C) 19.6 J. D) 31, 360 J. Show Answer Correct Answer: D) 31, 360 J. 10. What is the work done by gravity on a satellite in orbit? A) Positive work. B) Infinite work. C) Negative work. D) Zero work. Show Answer Correct Answer: D) Zero work. 11. Two objects were lifted by a machine. Object A had a mass of 2000 grams, and was lifted at a speed of 2 m/sec. Object B had a mass of 4000 grams and was lifted at a rate of 3 m/sec. Which object had a higher amount of kinetic energy when lifted? A) Object A. B) Object B. C) Both are the same since they travelled the same distance. D) Not enough information. Show Answer Correct Answer: B) Object B. 12. What is defined as the product of the magnitudes of displacement and thecomponent of the force parallel to the displacement? A) Power. B) Work. C) Momentum. D) Energy. Show Answer Correct Answer: B) Work. 13. It takes 60 J of work to push a large box 6 m across a floor. Assuming the push is in the same direction as the displacement, what is the magnitude of the force on the box? A) 6 N. B) 10 N. C) 60 N. D) 360 N. E) None of these. Show Answer Correct Answer: B) 10 N. 14. Define potential energy in your own words. A) Potential energy is the stored energy in an object based on its position or state. B) Potential energy is the energy of motion in an object. C) Potential energy is the energy that an object has due to its temperature. D) Potential energy is the energy released during a chemical reaction. Show Answer Correct Answer: A) Potential energy is the stored energy in an object based on its position or state. 15. A measure of energy transfer is what? A) Work. B) Power. C) Force. D) None of the above. Show Answer Correct Answer: A) Work. 16. Potential energy is expressed in joules A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. If a system is isolated, the total energy of the system A) Depends on the work done by the system. B) Is constant. C) Depends on the work done on the system. D) Decreases constantly. E) Increases constantly. Show Answer Correct Answer: B) Is constant. 18. What should be the angle between the forces and displacement to get maximum and minimum work A) 90, 0 degree. B) 0, 90 degree. C) 90, 180 degree. D) None of the above. Show Answer Correct Answer: A) 90, 0 degree. 19. A constant force acting over a given distance requires A) Constant Power. B) Increasing Power. C) Decreasing Power. D) None of the above. Show Answer Correct Answer: B) Increasing Power. 20. What is the kinetic energy of a 2 kg object moving at a velocity of 3 m/s? A) 18 Joules. B) 3 Joules. C) 6 Joules. D) 9 Joules. Show Answer Correct Answer: D) 9 Joules. 21. A construction worker does 270 J of work, lifting 90 N of hollow blocks up a ladder. How high did he climb up? A) 2m. B) 4m. C) 3m. D) 1m. Show Answer Correct Answer: C) 3m. 22. Having the same amount of work done means you will have the same amount of Power A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. How much force is used when 350 J is produced to move a car 5 m? A) 17500 N. B) 70 N. C) 355 N. D) 175 N. Show Answer Correct Answer: B) 70 N. 24. As the sun went down, the house became dark and Kyle turned on the lights. Which statement is true about power? A) The power of the light Kyle turned on is used to exert force. B) The power of the light Kyle turned on is the amount of energy transferred per time. C) The power of the light Kyle turned on can be calculated using force and distance. D) None of the above. Show Answer Correct Answer: B) The power of the light Kyle turned on is the amount of energy transferred per time. 25. Power is defined as the rate of doing work. What is the SI unit of power? A) Joule. B) Newton. C) Watt. D) Volt. Show Answer Correct Answer: C) Watt. 26. A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used? A) 600 W. B) 3600 W. C) 360 W. D) 60 W. Show Answer Correct Answer: C) 360 W. 27. Energy is the ability to apply force to cause movement in the direction of the what? A) Object. B) Force. C) Motion. D) None of the above. Show Answer Correct Answer: B) Force. 28. Kinetic energy is the energy of ..... A) Motion. B) Roman. C) Distance. D) Work. Show Answer Correct Answer: A) Motion. 29. What is the most common symbol for heat in thermodynamics? A) E. B) Q. C) H. D) W. Show Answer Correct Answer: B) Q. 30. A crane does work of 13, 500 J with a force of 5200 N to lift a beam. How far can the beam be lifted (in meters)? A) 702 M. B) 70200000 m. C) 26 M. D) 2.6 m. Show Answer Correct Answer: D) 2.6 m. 31. A boy pushes a lever down 2 meters with a force of 78 N, the box at the other end with a weight of 50 N moves up 2.5 meters. What is the percent efficiency? A) 100%. B) 124.8%. C) 80.13%. D) 40%. Show Answer Correct Answer: C) 80.13%. 32. What is the definition for kinetic energy? A) The energy of motion (due to mass and velocity). B) Stored energy due to position. C) Energy at the top of a hill. D) None of the above. Show Answer Correct Answer: A) The energy of motion (due to mass and velocity). 33. How does the concept of power relate to work and energy? A) Power is the ability to exert forces. B) Power is the distance covered per unit of energy. C) Power is a type of potential energy. D) Power measures the rate of doing work. Show Answer Correct Answer: D) Power measures the rate of doing work. 34. What is equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt? A) Watt. B) Efficiency. C) Joule. D) Mechanical Advantage. Show Answer Correct Answer: A) Watt. 35. Work is defined as: A) The rate of change of energy over time. B) The force applied perpendicular to the direction of motion. C) The energy transferred by a force acting over a distance. D) The force applied over a unit time. Show Answer Correct Answer: C) The energy transferred by a force acting over a distance. 36. What type of prehistoric environment did coal form from? A) Oceans. B) Desert. C) Forrests. D) Swamps. Show Answer Correct Answer: D) Swamps. 37. A 70.0 kg base runner moving at a speed of 4.0 m/s begins his slide into second base. The coefficient of friction between his clothes and Earth is 0.70. His slide lowers his speed to zero just as he reaches the base.How far does the runner slide? A) 0.86 m. B) 1.2 m. C) 0.57 m. D) 0.29 m. Show Answer Correct Answer: B) 1.2 m. 38. Stored energy is called A) Nuclear Energy. B) Potential Energy. C) Kinetic Energy. D) Heat Energy. Show Answer Correct Answer: B) Potential Energy. 39. Which type of energy is stored in the bonds between atoms? A) Thermal energy. B) Kinetic energy. C) Chemical energy. D) Potential energy. Show Answer Correct Answer: C) Chemical energy. 40. According to Einstein, energy is another form of ..... A) Speed. B) Motion. C) Matter. D) Light$^{2}$. Show Answer Correct Answer: C) Matter. 41. What is the formula for K.E.? A) (1/2)mv. B) Mv$^{2}$. C) (1/2)m$^{2}$v. D) (1/2)mv$^{2}$. Show Answer Correct Answer: D) (1/2)mv$^{2}$. 42. What is the value of potential energy if the height of object is zero A) Negative. B) Zero. C) Positive. D) Infinite. Show Answer Correct Answer: B) Zero. 43. When no friction or external applied forces are present, the total mechanical energy of a system will A) Increase. B) Decrease. C) Remain Constant. D) None of the above. Show Answer Correct Answer: C) Remain Constant. 44. What type of energy represents the sum of the KE and PE that a moving object has? A) Electrical energy. B) Electromagnetic energy. C) Total mechanical energy. D) Chemical energy. Show Answer Correct Answer: C) Total mechanical energy. 45. What is the equation for work? A) W = mass * acceleration. B) W = force/distance. C) W = force * distance. D) W = speed/time. Show Answer Correct Answer: C) W = force * distance. 46. Light is a form of ..... energy. A) Mechanical. B) Thermal. C) Sound. D) Electromagnetic. Show Answer Correct Answer: D) Electromagnetic. 47. T/F:Newton's 3rd law of motion says that when objects interact, they apply forces to each other of equal magnitude and opposite direction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 48. What is the energy released during nuclear fission or fusion, especially when used to generate electricity? A) Electrical Energy. B) Thermal Energy. C) Nuclear Energy. D) Chemical Energy. Show Answer Correct Answer: C) Nuclear Energy. 49. What is designed to change electrical energy into kinetic energy? A) Heater. B) Fan. C) Light bulb. D) Radio. Show Answer Correct Answer: B) Fan. 50. A spring with a spring constant of 200N/m is compressed by 0.1 m. What is the elastic potential energy? A) 10 J. B) 2 J. C) 1 J. D) 0.5 J. Show Answer Correct Answer: C) 1 J. 51. A boy lifted his school bag of mass 3 kg from the floor to his lap through a height of 0.5 m. What is the gravitational potential energy gained by the bag? A) 150 J. B) 15 J. C) 1500 J. D) 1.5 J. Show Answer Correct Answer: B) 15 J. 52. Which of the following is the correct formula for calculating work done when a force is applied? A) $W = m \times g$. B) $W = mgh$. C) $W = F \times d$. D) $W = \frac{1}{2}mv^2$. Show Answer Correct Answer: C) $W = F \times d$. 53. This is the type of energy that is stored for later use. A) Potential energy. B) Kinetic energy. C) Mechanical. D) Electrical energy. Show Answer Correct Answer: A) Potential energy. 54. What is the key word used across the three laws of motion to indicate a force? A) Action. B) Motion. C) Work. D) Displacement. Show Answer Correct Answer: A) Action. 55. How is gravitational potential energy calculated? A) Force times distance. B) Half times mass times velocity squared. C) Mass times gravity times height. D) Mass times velocity squared. Show Answer Correct Answer: C) Mass times gravity times height. 56. What is the unit of measure for power? A) Meters. B) Watt. C) Newtons. D) Joule. Show Answer Correct Answer: B) Watt. 57. A stone of mass 0.250 kg is thrown upwards. Its velocity decrease from 20 m/s to 10 m/s. The change in kinetic energy of the stone is A) 37.5 J. B) 75 J. C) 1.25 J. D) 3.75 J. Show Answer Correct Answer: A) 37.5 J. 58. The SI unit of energy is ..... ? A) Joule (J). B) Joule per metre (J/m). C) Newton metre (Nm). D) Newton per metre (N/m). Show Answer Correct Answer: A) Joule (J). 59. "An arrow released from a bow flying straight toward the target" . In what type of mechanical energy does it fall? A) Potential Energy. B) Kinetic Energy. C) Both. D) None of the above. Show Answer Correct Answer: B) Kinetic Energy. 60. A 6.0-kg cat runs after the mouse at 10.0 m/s. What is the cat's kinetic energy? A) 300 J. B) 600 J. C) 30 J. D) 60 J. Show Answer Correct Answer: A) 300 J. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books