Physics Practice: Energy (Mock Test 2 - Intermediate)
1. Which form of energy is possessed by a compressed spring in a toy gun?
2. A body of mass $m$ is raised to a height $h$. The work done against gravity is:
3. What is the relationship between Joule and Erg?
4. Which of these is the correct anatomical energy conversion in a Solar Cell?
5. If two bodies of the same mass are moving with velocities $v$ and $2v$, the ratio of their kinetic energies will be:
6. The unit of power 'Watt' is equivalent to:
7. A coolie carrying a load on his head and standing still does ________ work.
8. In an electric motor, the energy conversion is:
9. Calculate the power of a pump which lifts $100 \text{ kg}$ of water to a height of $10 \text{ m}$ in $10 \text{ s}$ ($g = 10 \text{ m/s}^2$).
10. Biomass is energy derived from:
11. Kinetic energy of an object of mass $m$ moving with velocity $v$ is:
12. When we wind a watch spring, we store ________ in it.
13. The energy conversion in a Microphone is:
14. 1 kWh is equal to how many Joules?
15. An object falls from a certain height. Its potential energy ________ while its kinetic energy ________.
16. The gravitational potential energy of a body is zero when it is at:
17. Power is a ________ quantity.
18. In an electric bulb, electrical energy is converted into:
19. Which of the following is an example of Geothermal energy source?
20. Work is done by a force only when it produces ________.
