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:
A)0)65.
B)3)00.
C)30.00.
D)0)75.

Question

Quizplus · Accepted Answer

The resolving power of a lens is directly proportional to its numerical aperture (NA). To separate details at half the distance, the NA must be doubled. Therefore, a lens with NA of 0.75 (half of 1.50) would separate details at half the distance.

An Objective Lens with a Numerical Aperture of 1