This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 4 Work – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 15 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The ability to do work is A) Power. B) Energy. C) Thermal. D) Kinetic. Show Answer Correct Answer: B) Energy. 2. Which energy resource stores kinetic energy? A) Coal. B) Nuclear. C) Solar. D) Wind. Show Answer Correct Answer: D) Wind. 3. A machine is very efficient. What does this mean? A) It produces a large amount of power. B) It works very quickly. C) It uses very little energy. D) It wastes very little energy. Show Answer Correct Answer: D) It wastes very little energy. 4. Which of the following about mass and weight is true? A) Weight is independent of gravity while mass is dependent of gravity. B) Mass is independent of gravity while weight is dependent of gravity. C) Both are independent of gravity. D) Both are dependent of gravity. Show Answer Correct Answer: B) Mass is independent of gravity while weight is dependent of gravity. 5. Food is a form of this type of energy. A) Chemical energy. B) Thermal energy. C) Sound energy. D) Light energy. Show Answer Correct Answer: A) Chemical energy. 6. What is the unit for work? A) Joules. B) Newton. C) Watts. D) None of the above. Show Answer Correct Answer: A) Joules. 7. Which statement illustrates work done? A) A weightlifter holds a barbell above her head. B) A teacher applies a force to a wall and becomes exhausted. C) A rolling marble hits a note card and moves it across a table. D) A waiter carries a tray full of meals across a dining room at a constant speed. Show Answer Correct Answer: C) A rolling marble hits a note card and moves it across a table. 8. Rate of doing work is called A) Power. B) Energy. C) Momentum. D) Torque. Show Answer Correct Answer: A) Power. 9. When comparing two electric motors lifting the same weight: A) The faster motor applies less force. B) The faster motor has more power. C) The faster motor uses less energy. D) The faster motor does less work. Show Answer Correct Answer: B) The faster motor has more power. 10. Kinetic energy is proportional to A) V2. B) V. C) Work. D) None of the above. Show Answer Correct Answer: A) V2. 11. A particle is moving in a straight line under the action of a variable force F=2x+3. What is the work done by the force in moving the particle from x=0 to x=4? A) 40 J. B) 28 J. C) 24 J. D) 32 J. Show Answer Correct Answer: B) 28 J. 12. What is the renewable source that produces energy from the movement of flowing water? A) Solar. B) Biomass. C) Geothermal. D) Hydroelectric. Show Answer Correct Answer: D) Hydroelectric. 13. In which of the following scenarios is work being done, according to the physics definition? A) Solving an equation. B) Lifting up a book. C) Holding a barbell above your head. D) Keeping a bike from falling as it rolls along a sidewalk. Show Answer Correct Answer: B) Lifting up a book. 14. What is the formula for calculating kinetic energy? A) $KE = \frac{1}{2}mv^2$. B) $KE = mv^2$. C) $KE = \frac{1}{2}mv$. D) $KE = mgh$. Show Answer Correct Answer: A) $KE = \frac{1}{2}mv^2$. 15. Two Spring of spring constants 1500N/m and 3000N/m respectively are stretched with the same force find the ratio of potential energy A) 1:4. B) 1:3. C) 1:2. D) 2:1. Show Answer Correct Answer: D) 2:1. 16. Assertion:If momentum of a body increases by 50%, its K.E. will increase by 125%.Reason:K.E. is proportional to square of velocity. A) Assertion and Reason are true, Reason is correct explanation of Assertion. B) Assertion and Reason are true, Reason is not the correct explanation of Assertion. C) Assertion is true, Reason is false. D) Both Assertion and Reason are false. Show Answer Correct Answer: A) Assertion and Reason are true, Reason is correct explanation of Assertion. 17. A 5 kg object is lifted to a height of 10 m. What is its potential energy? A) 980 J. B) 490.5 J. C) 300 J. D) 150 J. Show Answer Correct Answer: B) 490.5 J. 18. What is an example of a situation where no work is done? A) Driving a car on a flat road. B) Pushing a stationary car. C) Cycling up a hill. D) Rolling a bowling ball. Show Answer Correct Answer: B) Pushing a stationary car. 19. If a 1.2Kg book is lifted 5 meters, how much work is done? A) 58.8W. B) 4.2N. C) 58.8J. D) 4.2J. Show Answer Correct Answer: C) 58.8J. 20. The rate in which work is done is equivalent to A) Kinetic energy. B) Work. C) Power. D) Force. Show Answer Correct Answer: C) Power. 21. Which of the following quantities and units are INCORRECTLY paired? A) Work and joule. B) Power and watt. C) Energy and watt. D) Force and newton. Show Answer Correct Answer: C) Energy and watt. 22. Device that transforms energy is called A) Transducer. B) Machine. C) Transformer. D) Dynamo. Show Answer Correct Answer: A) Transducer. 23. Pushing a box across the room A) Work. B) No Work. C) All the above. D) None of the above. Show Answer Correct Answer: A) Work. 24. A load of 60N is moved through a distance of 2m when an effort of 20N moving at a distance of 8m is applied A) 133%. B) 30%. C) 40%. D) 75%. Show Answer Correct Answer: D) 75%. 25. What is the power of the engine when the velocity of the car is v, mass m, acceleration a, and external resistance R A) Rv. B) (R+ma)v. C) (R-ma)v. D) Mav. Show Answer Correct Answer: B) (R+ma)v. 26. A vehicle travelling at a constant velocity v has kinetic energy E. The velocity of the vehicle change to 1/2 v. The kinetic energy of the vehicle now will be: A) $\frac{1}{2}E$. B) $\frac{ }{ }2E$. C) $\frac{1}{4}E$. D) $\frac{ }{ }4E$. Show Answer Correct Answer: C) $\frac{1}{4}E$. 27. A ball is rolling on the ground, what type of energy does it have? A) Potential energy. B) Kinetic energy. C) Sound energy. D) Heat energy. Show Answer Correct Answer: B) Kinetic energy. 28. Kinetic energy depends on which two things? A) Velocity and acceleration. B) Mass. C) Mass and momentum. D) Velocity and mass. Show Answer Correct Answer: D) Velocity and mass. 29. What happen to the gravitational force on a body when you move away from earth's surface? A) It is converted into kinetic energy. B) It decreases. C) It stays constant. D) It increases. Show Answer Correct Answer: B) It decreases. 30. A force F = 5+2x act on a body in X direction. Where X is in meters. Calculate the work done in moving the body from rest to a distance of X= 2m A) 14j. B) 18J. C) 20J. D) 16J. Show Answer Correct Answer: A) 14j. 31. What is the formula for G.P.E.? A) Mg/h. B) Mgh$^{2}$. C) M$^{2}$gh. D) Mgh. Show Answer Correct Answer: D) Mgh. 32. A toy car has 100 J of kinetic energy. If the velocity decreases by a factor of 8, what is the new kinetic energy? A) 1.56 J. B) 12.5 J. C) 800 J. D) 1600 J. Show Answer Correct Answer: A) 1.56 J. 33. A bullet of mass 10 gm strikes a target at 400 m/s velocity and loses half of its initial velocity. The loss of kinetic energy in joules is A) 400. B) 200. C) 600. D) 800. Show Answer Correct Answer: C) 600. 34. The unit for work is derived in honor of ..... A) James Prescott Joule. B) Isaac Newton. C) James Watt. D) Blaise Pascal. Show Answer Correct Answer: A) James Prescott Joule. 35. W = Kg m$^{2}$/s$^{2}$Is work equivalent to the following? A) Yes, it's equivalent. B) No, its not equivalent. C) Yes, it's not equivalent. D) Yesn't. Show Answer Correct Answer: A) Yes, it's equivalent. 36. A force = (6i-8j) N, acts on a particle and displaces it over 4 m along the X-axis and then displaces it over 6 m along the Y-axis. The total work done during the two displacements is A) Zero. B) -24 J. C) 72 J. D) 24 J. Show Answer Correct Answer: B) -24 J. 37. Find the velocity of body of mass 100g having kinetic energy of 20J. A) 20m/s. B) 10m/s. C) 0.2 m/s. D) 0.1m/s. Show Answer Correct Answer: A) 20m/s. 38. If a 1300-kg car has been lifted so it has 19500 J of potential energy, it was lifted up ..... A) 150 m. B) 1.5 m. C) 15 m. D) 0.67 m. Show Answer Correct Answer: B) 1.5 m. 39. Work done = Force x ..... A) Speed. B) Velocity. C) Acceleration. D) Distance. Show Answer Correct Answer: D) Distance. 40. You do a pull-up, lifting yourself by 0.5 m in 2 seconds. If your weight is 600 N, how much work did you do, and what was your power output during lifting? A) 150 W. B) 100 W. C) 200 W. D) 50 W. Show Answer Correct Answer: A) 150 W. 41. A ball tied to a string is being whirled around in a circle. What can you say about the work done by tension on the string? A) Tension does no work at all. B) Tension does negative work. C) Tension does positive work. D) Tension does maximum work. Show Answer Correct Answer: A) Tension does no work at all. 42. If a 2 kg ball is traveling at 4 meters per second, what is its kinetic energy? A) 4 J. B) 8 J. C) 2 J. D) 16 J. E) 1 J. Show Answer Correct Answer: D) 16 J. 43. A constant force F, acting on a car of mass m, moves the car up the slope through a distance s at constant velocity v. The angle of the slope to the horizontal is $\alpha$ A) $\frac{mv}{Fs}$. B) $\frac{mgs\sin\alpha}{Fv}$. C) $\frac{mv^2}{2Fs}$. D) $\frac{mg\sin\alpha}{F}$. Show Answer Correct Answer: D) $\frac{mg\sin\alpha}{F}$. 44. All of the following are an example of chemical energy except for: A) Hamburger. B) Shoe. C) Batteries. D) Fruit. Show Answer Correct Answer: B) Shoe. 45. In order to do work on an object, the force you exert must be ..... A) The maximum amount of force you are able to exert. B) In the same direction as the object's motion. C) In a direction opposite to Earth's gravitational force. D) Quick and deliberate. Show Answer Correct Answer: B) In the same direction as the object's motion. 46. For work to be done on an object, A) The object must not move. B) The object must move some distance as a result of a force. C) The object must move, whether or not a force is exerted on it. D) Some force need only be exerted on the object. Show Answer Correct Answer: B) The object must move some distance as a result of a force. 47. Work is a transfer of what? A) Energy. B) Power. C) Force. D) None of the above. Show Answer Correct Answer: A) Energy. 48. A force of 12 N is used to lift a box 0.5 meters above a floor. What amount of work was done to lift the box? A) 11.5 J. B) 24.0 J. C) 12.5 J. D) 6.0 J. Show Answer Correct Answer: D) 6.0 J. 49. The kinetic energy of a 1.50 kg sphere just hitting the ground is 270.00 J. What is the height of the sphere before it was dropped? A) 27.5 m. B) 405.0 m. C) 18.3 m. D) 180.0 m. Show Answer Correct Answer: C) 18.3 m. 50. A man of mass 50 kg runs up the stairs in 10 s. If the height of each step is 20 cm and number of steps is 50. What is the power of the man? A) 500 W. B) 300 W. C) 250 W. D) 600W. Show Answer Correct Answer: A) 500 W. 51. What is the unit of measure for energy? A) Meters. B) Joule. C) Watt. D) Newton. Show Answer Correct Answer: B) Joule. 52. What is the unit of work and energy in the International System of Units (SI)? A) Watt. B) Pascal. C) Newton. D) Joule. Show Answer Correct Answer: D) Joule. 53. What is the mass of a moving object that has 100 Joules of KE and moves at a velocity of 2 m/s? A) 50 kg. B) 200 kg. C) 100 kg. D) 25 kg. Show Answer Correct Answer: A) 50 kg. 54. A bird of mass 90g is flying in the air at a speed of 10ms$^{-1}$. The bird collides with a window, and is unharmed. How much work does the window do on the bird? A) 45J. B) 450J. C) 4500J. D) 0.45J. E) 4.5J. Show Answer Correct Answer: E) 4.5J. 55. When a 65 kg skydiver jumps from a plane, her speed steadily increases until air resistance provides a force that balances the force due to free fall. How fast is the skydiver falling if her kinetic energy at the moment is 704000J? A) 10830.76 m/s. B) 21661.53 m/s. C) 147.17 m/s. D) 22880.0 km/s. Show Answer Correct Answer: C) 147.17 m/s. 56. Which quantity has the greatest influence on the amount of kinetic energy a large truck has while moving down the highway? A) It's mass. B) It's weight. C) It's velocity. D) It's size. E) None of the above. Show Answer Correct Answer: C) It's velocity. 57. The work done will be zero when the angle between the force and the distance is A) 60. B) 45. C) 90. D) 180. Show Answer Correct Answer: C) 90. 58. Elastic potential energy is energy stored in object that are compressed or ..... A) Movement. B) Harnessed. C) Pulled. D) Stored. Show Answer Correct Answer: D) Stored. 59. An object moves in a straight line on a ROUGH horizontal surface. If the net work done on the object is zero, then ..... A) The object moves at constant acceleration. B) The object moves at constant speed. C) The object has zero kinetic energy. D) There is no frictional force acting on the object. Show Answer Correct Answer: B) The object moves at constant speed. 60. An elephant with a mass of 5500 kg, moves with 1, 000, 000 J of kinetic energy. How fast does the elephant move? A) 13.48 m/s. B) 19.07 m/s. C) 363.63 m/s. D) 181.81 m/s. Show Answer Correct Answer: B) 19.07 m/s. ← 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 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books