Question

The magnification of a microscope is equal to

A) the product of magnification produced individually by the ocular and the N. A
.B) the product of magnification produced individually by the ocular and objective lenses
C) the magnification power of the objective lens divided by the N. A.
D) the magnification power of the ocular lens divided by the N. A.
E) the magnification power of the objective lens divided by that of the ocular lens.

Answer 1

The magnification of a microscope is the product of the magnification powers of the ocular and objective lenses; neither division by nor product with the numerical aperture (NA) is involved. The correct option is B.

Step-by-step explanation:

The magnification of a microscope is determined by the product of the magnifications of its two main lenses, which are the objective lens and the ocular or eyepiece lens.

For instance, if an objective lens has a magnification power of 40x and the ocular lens offers a magnification of 10x, then the total magnification of the microscope would be 40x × 10x = 400x.

The numerical aperture (NA) is not directly involved in calculating the magnification, but is related to the resolving power of the microscope.

The total magnification is not the product or division involving the NA, but simply the product of the individual magnifications provided by the ocular and objective lenses. The correct option is B.