What for concave and convex mirrors and lenses are used?
Uses of Concave Mirrors
- Concave mirrors are used as shaving mirrors to see a larger image of the face.
- Dentists use concave mirrors to view the back of the tooth. ENT doctors use them for examining the internal parts of the ear, nose and throat.
- They are used as reflectors in the headlights of vehicles, search lights and in torch lights to produce a strong parallel beam of light.
- Huge concave mirrors are used to focus sunlight to produce heat in solar furnaces.
Uses of Convex Mirrors
- Used as rear view mirrors in automobiles as it covers wide area behind the driver.
- Used as reflectors for street light bulbs as it diverges light rays over a wide area.
Uses of Convex Lenses
- Uses in spectacles to correct the defect of vision called hypermetropia or long sightedness
- Used for making a simple camera
- Used as magnifying glasses
- Used in microscopes, telescopes, film projectors, etc.
Uses of Concave Lenses
- Concave lenses are used for correcting myopia or short-sightedness.
- Concave lenses are used on flashlights to magnify the light produced by the bulb.
- Used in peepholes of house doors for security to provide a view of people or objects outside the doors.