I have NO clue what so ever what the answer is
The statement is false, because lenses can not be planar they must have a curve.
False.
False
false
False
false
True
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Objective lenses are convex lenses.
Bausch and Lomb ran an advertisement, which the FDA described as "false and misleading," that claimed their Pure Vision contact lenses were superior to Johnson and Johnson's AcuVue brand.
There are many different lenses for cameras; Wide angle lenses, standard lenses, portrait lenses, telephoto lenses and more. Canon has its own brand of lenses but also Sigma y Tamron are offering compatible lenses for it, it just depends on the price and the quality you are looking for
Carl Zeiss sell a wide range of lenses including: eyeglass lenses, camera lenses, cinematography lenses and also lenses for technical applications which assist scientists and engineers.