Examveda
Examveda

A simple microscope consists of :

A. A short focus convex lens

B. A long focus convex lens

C. A short focus concave lens

D. A long focus concave lens

Answer: Option A

Solution(By Examveda Team)

Simple microscope - light microscope consisting of a short focus single convex lens is used to produce an enlarged image. The magnifying glass was invented by Roger Bacon in 1250. In the original ‘simple’ microscopes, a single light path went through the object viewed and one lens, increasing the visibility of the object by some amount (magnification). (One light path, one lens = simple microscope) Compound refers to the fact that in order to enlarge an image; a single light path passes through a series of lenses in a line. Each lens magnifies the image over the previous one. (One light path, multiple lenses = compound microscope) Usually, a modern compound microscope has multiple lenses within the eye tube, and a series of three or four objective lenses on the ‘head’ which can be rotated into place. The image produced is a two dimensional (2-D) image.

This Question Belongs to General Knowledge >> Physics

Join The Discussion

Related Questions on Physics

Radiocarbon is produced in the atmosphere as a result of

A. Collision between fast neutrons and nitrogen nuclei present in the atmosphere.

B. Action of ultraviolet light from the sun on atmospheric oxygen.

C. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere.

D. Lightning discharge in atmosphere.