Across
- 2. Surface that reflects light
- 4. Quantity of matter in a body
- 5. Force × displacement
- 7. Bouncing back of light
- 9. Rate of doing work
- 10. Earth’s pull towards its center
- 11. A push or pull acting on an object
- 13. Force that opposes motion
- 16. Mass per unit volume
- 17. Electric potential difference
- 18. Bending of light in different medium
- 19. Transparent device that focuses light
Down
- 1. Force per unit area
- 3. Change in position with time
- 4. Object that attracts iron
- 6. Force with which Earth attracts a body
- 8. Flow of electric charge
- 12. Opposition to current flow
- 14. Upward force by liquid on an object
- 15. Ability to do work