Question

In compound microscope, magnification does not depend upon

• A. Focal length of lens
• B. Numerical aperture of objective lens
• C. Tube length of microscope
• D. All of the above

Answer 1

The correct option is B Numerical aperture of objective lens

The numerical aperture of a microscope objective lens is a measure of its ability to accept light and resolve fine specimen detail at a fixed object distance. It is the important parameter to any optic fibers. It determines the resolving power of the objective. The higher the NA of the total system, the better the resolution. The magnification does not depend on numerical aperture. Thus, the correct answer is option B.