Question

What for concave and convex mirrors and lenses are used?

Answer 1

convex lenses can be used to get magnified or larger images of objects.as it shows small images,it can be used as spectacles for short sightedness(myophia).it can also be used in flashlights, peepholes, binoculars, telescopes, and in photography.it is also kept in curves of road to get a better veiw of the coming vehicles which cannot be seen by the other driver.it can reduce accidents.

concave lens can be used as reflecting surfaces in headlights of cars, in telescopes, in satellite dishes, as shaving mirrors, in torch