Question

what are the devices used in concave lens

Answer 1

Glasses: Opticians use concave lenses to correct nearsightedness.

Cameras: Camera manufacturers use combinations of concave and convex lenses to improve the quality of photographs.

Flashlights: Concave lenses are used in flashlights to widen the beam produced by the bulb.

Peepholes: Door viewers, or peepholes use one or more concave lenses device to minimize the proportions of specific objects and give a wide overview of an entire area.

Answer 2

Heya Mate........................

Here is your answer...............................

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Some concave lens uses are listed in the points below:-

==> Telescope

==> Binoculars

==> Spectacles

==> Lasers

==> Cameras

==> Flashlights

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Thanks..........................