An objective lens with a numerical aperture of 1.50 can separate details at half the distance of a lens with a numerical aperture of:

Question

Quizplus · Accepted Answer

The ability of an objective lens to separate details is proportional to the numerical aperture (NA). A higher NA allows a lens to separate smaller details. Therefore, if an objective lens with an NA of 1.50 can separate details at half the distance, a lens with half the NA, which is 0.75, can separate details at twice the distance. The other choices have either much higher (A and E) or much lower (B and D) NAs than the original lens and thus would not achieve the same level of detail separation.

An Objective Lens with a Numerical Aperture of 1