19/06/2026
11. Displacement – Shortest distance from initial to final position with direction.
12. Distance – Total path covered by an object.
13. Inertia – Resistance of an object to changes in its motion.
14. Weight – Gravitational force acting on an object.
15. Gravity – Force that attracts objects toward each other.
16. Friction – Force that opposes motion between surfaces.
17. Torque – Turning effect of a force.
18. Frequency – Number of oscillations per second.
19. Period – Time taken for one complete oscillation.
20. Wavelength – Distance between two successive wave crests or troughs.
21. Amplitude – Maximum displacement of a vibrating particle.
22. Current – Flow of electric charge.
23. Voltage – Electric potential difference between two points.
24. Resistance – Opposition to the flow of electric current.
25. Charge – Fundamental property of matter causing electrical effects.
26. Magnetic Field – Region where magnetic forces act.
27. Refraction – Bending of light when it passes between media.
28. Reflection – Bouncing back of light from a surface.
29. Lens – Transparent object that refracts light.
30. Atom – Smallest unit of an element that retains its properties.
