Reflection of light · प्रकाश का परावर्तन
Angle in = angle out. Which mirror is used where?
Reflection of light games
Laws of reflection
- The angle of incidence = the angle of reflection.
- The incident ray, the reflected ray and the normal lie in the same plane.
Plane mirror image
Virtual, upright, same size, as far behind the mirror as the object is in front, and laterally inverted (left ↔ right).
Spherical mirrors
| Concave (converging) | Convex (diverging) |
|---|---|
| Real or virtual image depending on where the object is; magnified when the object is close | Always virtual, upright and smaller |
| Shaving mirror, dentist's mirror, torch reflector, solar cooker | Rear-view mirror, road-bend mirror, shop security mirror |
f = R/2 · Mirror formula 1/v + 1/u = 1/f · Magnification m = −v/u.
For Class 7 (Light: Shadows and Reflections), Class 8 (Light: Mirrors and Lenses) and Class 10 (Light — Reflection and Refraction).
A one-page chart to stick on the wall, and a worksheet to practise.
Reflection of light
Laws of reflection
- The angle of incidence = the angle of reflection.
- The incident ray, the reflected ray and the normal lie in the same plane.
Plane mirror image
Virtual, upright, same size, as far behind the mirror as the object is in front, and laterally inverted (left ↔ right).
Spherical mirrors
| Concave (converging) | Convex (diverging) |
|---|---|
| Real or virtual image depending on where the object is; magnified when the object is close | Always virtual, upright and smaller |
| Shaving mirror, dentist's mirror, torch reflector, solar cooker | Rear-view mirror, road-bend mirror, shop security mirror |
f = R/2 · Mirror formula 1/v + 1/u = 1/f · Magnification m = −v/u.
kheloaurseekho.in — free charts, games and worksheets
Reflection of light — worksheet
Name: ____________________ Class: ______ Date: __________
kheloaurseekho.in — free charts, games and worksheets
