NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a compound light microscope the lens closest to the eye is the ____ lens.
A
objective
B
fine
C
course
D
ocular
Explanation: 

Detailed explanation-1: -A compound microscope uses multiple lenses to magnify an image for an observer. It is made of two convex lenses . The first, the ocular lens, is close to the eye and the other lens is objective lens. Both the lenses are of different focal length because uses of both are different.

Detailed explanation-2: -A compound microscope has two lenses. The lens that a person looks into is called the ocular lens and the lens nearest the specimen (pictured) is called the objective lens.

Detailed explanation-3: -The eyepiece, also called the ocular lens, is a low power lens. The objective lenses of compound microscopes are parfocal. You do not need to refocus (except for fine adjustment) when switching to a higher power if the object is in focus on a lower power. The field of view is widest on the lowest power objective.

There is 1 question to complete.