Important Definitions of BISE, Punjab Physics 9th

Following are the important Definitions for all BISE of Punjab:
PHYSICS 9TH

1. Physics
2. Geophysics
3. Astronomy
4. Light
5. sound
6. meter Kilogram
7. second
8. least count
9. zero Error
10. pitch
11. error
12. systematic error
13. random error
14. Force
15. Newton
16. Inertia
17. Statics
18. equilibrium
19. first condition of equilibrium
20. 2nd condition of equilibrium
21. gravitation
22. Mass of Earth
23. .... more will come soon