Page 6 - Science E-Book Prep.3 2024-2025 1st term_ unit 2_Neat

Science Department
Prep.3

Plane mirror: - It’s a piece of plane glass, painted from behind

with a thin layer of silver metal to give the glass a bright surface which
most of the light rays which fall on it.

Properties of image formed by a plane mirror:

1- Upright (erect)
2- Its size is equal to the objects’ size.

3- Laterally inverted (reversed).
4-Virtual (can’t be received on a screen)

5- Distance between object and mirror = distance between image and mirror

6- Straight line joining the object to its image is perpendicular to the
surfaceof the mirror.

Spherical mirror

Spherical mirror:-It’s the mirror its reflecting Surface is a part of a hollow
sphere.

There are two types:

Concave(converging) mirror Convex(diverging) mirror

Its reflecting surface is a part ofthe Its reflecting surface is a part of the
inner surface of the sphere outer surface of the sphere

It converges (collects) light raysafter It diverges light rays after
reflection reflection

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