Question

9X was the maximum magnification of ________microscope.
A) First
B) Second
C) Advanced
D) None of the above

Answer 1

Hint: A microscope is an optical instrument used to magnify objects that are too small to be seen with the naked eye. Using a microscope to examine cellular structures is called microscopy and people doing research are called microscopists.

Complete answer:
A microscope is an optical instrument used to magnify objects that are too small to be seen with the naked eye. Using a microscope to examine cellular structures is called microscopy and people doing research are called microscopists.
Two Jansen brothers from the Netherlands, Francis Jansen, and eyeglass manufacturer Zacharias Jansen created the first optical microscope in 1590.
Their first microscopes only had a 9x maximum magnification and the images were a little blurry, so they were more novel than scientific instruments. Jansen's microscope could not survive, but the instrument described for the Dutch king consisted of “three sliding tubes, 18 inches if fully extended in length, and two diameters. This microscope magnifies 3x when fully closed and 9x when fully expanded.
Kepler created the first compound microscope in 1611.
Robert Hooke developed the first laboratory microscope with 14-42 times magnification in 1665. He notices a small hole in the cork called a cell.
This is Anthony Van Leeuwenhoek (1632-1723), a Dutch tissue expert, scientist, and one of the pioneers of microscopes who first built and used a real microscope in the late 17th century. He built a simple portable monocular microscope. Van Leeuwenhoek was more successful than his contemporaries in polishing small glass beads with the most famous lenses of the time at 270x magnification to create superior lenses. With this lens, he created the world's first practical microscope.
Zsigmondy invented the dark-field microscope in 1905.

So, option A is the correct answer.

Note: Microscopes are of a dual function Magnification and resolution. The usefulness of a microscope depends on its resolution, not magnification. The resolution is not related to magnification. Microscopic magnification is the degree to which the size of an optical image is enlarged relative to the actual size of the viewed object. Microscope Resolution is the ability to distinguish two very close objects into separate objects.