sample ppt
TRANSCRIPT
Akhil S.RPhysical science
We use mainly three types of mirrors
1. Convex mirror 2.Concave mirror 3.Plane mirror
CONVEX MIRROR
1.They are curved outwards
2. They shows object closer than they appear
Concave mirror
1.They are curved inwards
2.They shows object wider than they appear
PLANE MIRROR
Shows the actual & virtual images
Principal axis
Focal length of concave mirror
• The focal length of a concave mirror is the distance between its pole and principal focus.
Images formed by concave mirror
2. When object is beyond C
The image formed is• between the C & F• Real & inverted• smaller than the object
3.When the object at C
The image formed is• at the center of curvature • real & inverted• same size as the object
4. When object is between C & F
The image formed is•Beyond C•Real & inverted•larger than the
Object
5. When object is at F
The image is•At infinity•Real & inverted•Highly magnified
6. When object is between P & F
The image is
•Behind the mirror
•Virtual & erect
•Larger than the
object
Images formed by convex mirror
1.When object is beyond pole
The image is•Behind the
Mirror between
P & F•Virtual & erect•diminished
2.When object at infinity
The image is
•Behind the mirror
•Virtual & erect
•Highly diminished