Question

state the uses of- 1-convex lens 2-convex mirror 3-concave mirror 4-concave lens 5-plane mirror

Answer 1

convex lens are used in binoculors.
convex mirrors are used in rear view mirror of vehicles.
concave mirrors are used by dentists to see teeth and by many doctors

Answer 2

Convex lens :
1) Used in spectacles to correct eye defect called hypermetropia.
2) used in making microscopes and telescopes
3) Used to make simple cameras and magnifying lens

Convex mirror:
1)Used as rear view mirrors in vehicles to see the traffic at back side
2) used as shop security mirrors.

Concave mirror:
1) Used as shaving mirrors.
2) Used by dentists to see enlarged image of teeth of patients
3) Used to focus sun's rays for heating solar furnaces.
4) Used as reflectors in torches, vehicle head light

Concave lens:
1) Used to correct eye defect called myopia.
2) Used as eye lens in Galilean telescope
3) used in spyhole in doors

Plane mirrors:
1) used to see our own reflection
2) used in making periscopes
3) They are fixed at blind turns so that drivers can see the vehicle coming from other side and prevent accidents