Respuesta :

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(1) In medical equipments, scanner, CD player -
These instruments use laser light. For proper working of these instruments concave lenses are used.
(2) spectacles -Concave lenses are used in spectacles to correct Myopia (Nearsightedness).
(3) Torch-Concave lenses is used to spread widely the light produced by a small bulb inside a torch.
(4) The peep hole in door-This is a small safety device which helps us see a large area outside the door. This uses one or more Concave lenses.

Hope it helps you...!

Answer:

It is used in the aircraft landing to guide the airplanes.

Explanation:

It is used as a torch to reflect the light rays, it is used during shaving to get an erect and enlarged image of the face, etc. Some concave mirror uses are listed in the points below. Concave mirrors reflect light inward to one focal light.

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