observe the following figure and answer the questions : QUESTIONS :- (a) in which type of microscope do you find the lenses arranged as shown in the following figure? (b) write in brief, the working of this microscope (c) How can we get different magnifications in this optical instruments?
Answers
Answer:
The magnification of a magnifying glass depends upon where it is placed between the user’s eye and the object being viewed and upon the total distance between eye and object.
The magnifying power is the ratio of the sizes of the images formed on the user’s retina with and without the lens.
The highest magnifying power is obtained by putting the lens very close to the eye and moving both the eye and the lens together to obtain the best focus.
Key Terms
lens: an object, usually made of glass, that focuses or defocuses the light that passes through it
diopter: a unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters
convex: curved or bowed outward like the outside of a bowl or sphere or circle
Explanation:
The magnification of a magnifying glass depends upon where it is placed between the user’s eye and the object being viewed and upon the total distance between eye and object.
The magnifying power is the ratio of the sizes of the images formed on the user’s retina with and without the lens.
The highest magnifying power is obtained by putting the lens very close to the eye and moving both the eye and the lens together to obtain the best focus.
Key Terms
lens: an object, usually made of glass, that focuses or defocuses the light that passes through it
diopter: a unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters
convex: curved or bowed outward like the outside of a bowl or sphere or circle