Question : What was invented by Zacharias Jansen?
Option 1: Jet engine
Option 2: Radium
Option 3: Microscope
Option 4: Electric lamp
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Correct Answer: Microscope
Solution : The correct option is Microscope.
Zacharias Janssen, a Dutch eyeglass maker, is credited with creating one of the first compound microscopes. The early microscopes had a 20–30 fold or greater magnification power. It was developed around 1600s. Usually, convex lenses are used in microscopes to magnify the image of the specimen.
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