This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 4 Work – Quiz 44 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 4 Work Quiz 44 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In scientific terms, you do work only when you exert? on an object and move it. A) Energy. B) Work. C) Force. D) None of the above. Show Answer Correct Answer: C) Force. 2. What type of energy does a moving object possess? A) Potential energy. B) Thermal energy. C) Kinetic energy. D) Chemical energy. Show Answer Correct Answer: C) Kinetic energy. 3. How much power is created if Jayden S. does 20J of work in 2 seconds? A) 10W. B) 10J. C) 2J. D) 2W. Show Answer Correct Answer: A) 10W. 4. In a certain situation, Force and Displacement are not equal to zero. But the work done by the force is zero. From this, we conclude that A) Force and Displacement are in the same directions. B) Force and Displacement are in opposite directions. C) Force and Displacement are at right angles. D) None of the above. Show Answer Correct Answer: C) Force and Displacement are at right angles. 5. In which situation is there work done on the system? A) A basket being lifted. B) A weightlifter holding a barbell in the air. C) A waiter carrying the order of the customer. D) A man carrying a bag of cement on his shoulder. Show Answer Correct Answer: A) A basket being lifted. 6. Which of the following is a correct expression of power? A) Work divided by time. B) Work multiplied by time. C) Force divided by distance. D) Distance divided by time. Show Answer Correct Answer: A) Work divided by time. 7. When is the potential energy of an oscillating simple pendulum i) Maximum II ) Minimum A) Mean and Extreme position. B) Extreme and mean position. C) All the above. D) None of the above. Show Answer Correct Answer: B) Extreme and mean position. 8. A 2 kg ball is attached to a 0.80 m string and whirled in a horizontal circle at a constant speed of 6 m/s. The work done on the ball during each revolution is: A) 90J. B) 72J. C) 16J. D) 0. Show Answer Correct Answer: D) 0. 9. Distance can be expressed in what? A) Joules. B) Newtons. C) Meters. D) None of the above. Show Answer Correct Answer: C) Meters. 10. An object of mass m raised to a height 2h above ground level posses a gravitational potential energy of A) 1/2 mgh. B) Mgh. C) 2mgh. D) $\frac{mg}{2h}$. Show Answer Correct Answer: C) 2mgh. 11. Simple machines make work easier by increasing what? A) The distance over which work is done. B) The force needed to do work. C) The time required to do work. D) The acceleration of a massive object. Show Answer Correct Answer: A) The distance over which work is done. 12. If you hold a 20 N object 2 m off of the ground, how much work have you done? A) 40 J of Work. B) 10 J of Work. C) No Work. D) 18 J of Work. Show Answer Correct Answer: C) No Work. 13. If 150 Joules of work is needed to move a box 10 meters, what force was used? A) 1500 N. B) 15 N. C) 1.5 N. D) 150 N. Show Answer Correct Answer: B) 15 N. 14. What type of work is done when pushing a wall? A) Zero Work. B) Negative Work. C) Maximum Work. D) Positive Work. Show Answer Correct Answer: A) Zero Work. 15. Energy is the ability to do work. When you carry an apple that weighs 1 kg, 2 meter from the ground at a speed of 5 m/s2. What is the work done? A) 200 J. B) 100 J. C) 10 J. D) 20 J. Show Answer Correct Answer: D) 20 J. 16. Which energy transformation occurs in a toaster? A) Chemical to electric. B) Electric to thermal. C) Kinetic to chemical. D) Thermal to potential. Show Answer Correct Answer: B) Electric to thermal. 17. A 35kg child has 1800J chemical energy, climbs 3.2m high stairs in 3 minutes. Calculate:i. The power used to climb the stairs.ii. Children's energy efficiency. A) 5.7 W, 45 %. B) 6.2 W, 62 %. C) 6.1 W, 61 %. D) None of the above. Show Answer Correct Answer: C) 6.1 W, 61 %. 18. A truck and car have same kinetic energy. Which has more momentum? A) Truck. B) Car. C) Truck and car have same momentum. D) None of these. Show Answer Correct Answer: A) Truck. 19. What happen to the gravitational force on a body when u move away from earth's surface? A) It becomes stronger. B) It becomes weaker. C) It remains the same. D) It become stronger first then it weakens. Show Answer Correct Answer: B) It becomes weaker. 20. If a 2 kg object is lifted to a height of 5 meters, what is its potential energy? A) 50 Joules. B) 75 Joules. C) 98.1 Joules. D) 120 Joules. Show Answer Correct Answer: C) 98.1 Joules. 21. A pump lifts 200 kg water per minute through a vertical height of 15 m. Calculate the power input rating of the pump if it is 65% efficient? A) 480 W. B) 500 W. C) 640 W. D) 770 W. E) 890 W. Show Answer Correct Answer: D) 770 W. 22. What is the formula for weight? A) W = m/g. B) W = g/m. C) W = mg. D) W = mg$^{2}$. Show Answer Correct Answer: C) W = mg. 23. Calculate the work done by a 47 N force pushing a pencil 0.26 m. A) 12.2. B) 13.5. C) 12.8. D) 11.2. Show Answer Correct Answer: A) 12.2. 24. The rate at which energy is transferred. A) Energy. B) Power. C) Work. D) None of the above. Show Answer Correct Answer: B) Power. 25. Power is A) The ability to do work. B) The rate at which work is done. C) The force applied to an object for a distance. D) None of the above. Show Answer Correct Answer: B) The rate at which work is done. ← 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