Reflection From Mirrors
Concave mirror: Reflection takes place at concave surface, Focal length of it is negative, It is a converging mirror, It has a real focus
Uses of Concave Mirror:
1) As reflector in electric torch, head lights of vehicle, search light, etc. The source of light is put at the focus of the reflector, which produces a strong parallel beam of light, which helps in clear visibility.
2) As shaving mirror to produce larger image of face to facilitate better viewing during shaving.
3) Concave mirror is used by dentists to see larger image of teeth of the patient. When a tooth is placed between focus and pole, the concave mirror produces a magnified image of the tooth.
4) As reflector in solar furnace. By using concave mirror in solar furnace the concentrated rays of sunlight is obtained at focus which produces enormous amount of heat because of concentration.