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Class 11 Physics (Part I) Chapter 4 Work Quiz 47 (25 MCQs)

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1. In comparing of table tennis ball and tennis ball, which ball covered a longer distance once it was placed in a slope?
2. Which of the following would NOT result in work being done?
3. Falisha pulled a box with a force of 30N at an angle of 50$^{0}$ to the floor. Calculate the work done by Falisha if she pulled the box for a distance of 10m.
4. Distinguish between gravitational potential energy (GPE) and elastic potential energy (EPE).I. GPE the energy stored due to height of object above the surface of Earth II. EPE is due to deformation of object.III. Both are stored energy available to do work
5. A 60 kg boy lying on a surface of negligible friction throws horizontally a stone of mass 1 kg with a speed of 12 m/s away from him. As a result with what kinetic energy he moves back?
6. Which of the following scenarios involves kinetic energy?
7. A car moves moves with speed. What type of energy does it have because it is moving?
8. Energy that is stored is called .....
9. Elastic potential energy is stored in objects like springs when they are:
10. What type of product takes place when two vector quantities are multiplied which results to a scalar quantity like work?
11. Lifting a laundry basket
12. A boy of mass 51kg climbed up a staircase of height 4m in 5s. Calculate the power delivered by the boy
13. The kinetic energy of an object is at its maximum when:
14. Work causes a change in
15. The unit used to measure work is the
16. If a boulder is lifted by a forklift a distance of 10 meters with a force of 30 Newtons. How much work is being done?
17. What would 14J be an example of?
18. Which of these is an example of work being done on an object?
19. Using heat from the Earth's interior to generate electricity is called .....
20. If a car is moving at a speed of 20 m/s and has a mass of 1000 kg, what is its kinetic energy?
21. The undefined nuclear region of prokaryotes are also known as:
22. A boy pushes on a parked car with a force of 195N. The car does not move. How much work does the boy do?
23. What happens to the potential energy of an object as it falls?
24. A football has a potential energy of 100 J. If the height increases by a factor of 10, what would be the new potential energy?
25. The work performed on an object depends on
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