Question

11. Magnification refers to how much larger an object appears when viewed. Which of the following
is the correct way of solving the total magnification of an image under a microscope?
a. The magnification power of the objective lens is multiplied by that of the numerical aperture.
b. The magnification power of the objective lens is divided by that of the numerical aperture.
The magnification power of the objective lens is multiplied by that of the ocular lens.
d. The magnification power of the objective lens is divided by that of the ocular lens.
C.​

Answer 1

Answer:

Explanation:

A simple microscope or magnifying glass (lens) produces an image of the object upon which the microscope or magnifying glass is focused. Simple magnifier lenses are bi-convex, meaning they are thicker at the center than at the periphery as illustrated with the magnifier in Figure 1. The image is perceived by the eye as if it were at a distance of 10 inches or 25 centimeters (the reference, or traditional or conventional viewing distance).

Since the image appears to be on the same side of the lens as the object, it cannot be projected onto a screen. Such images are termed virtual images and they appear upright, not inverted. Figure 1 presents an illustration of how a simple magnifying lens operates. The object (in this case the subject is a rose) is being viewed with a simple bi-convex lens. Light reflected from the rose enters the lens in straight lines as illustrated in Figure 1. This light is refracted and focused by the lens to produce a virtual image on the retina. The image of the rose is magnified because we perceive the actual size of the object (the rose) to be at infinity because our eyes trace the light rays back in straight lines to the virtual image (Figure 1)