Question

Which two microscopes generate three- dimensional images?
A) Scanning electron microscope and scanning tunnelling microscope.
B) Transmission electron microscope and Scanning electron microscope
C) scanning tunnelling microscope and transmission electron microscope
D) Compound light microscope and Scanning electron microscope

Answer 1

A microscope is an instrument which is used to visualize small objects, which cannot be seen through naked eye. Through the lens present in a microscope the object can be magnified utilizing light rays focussing on it. The first microscope to be discovered was the compound microscope.

Complete answer:
With advancement in technology, the quality of microscopes have increased which helps in better visualization and to produce a three- dimensional image of the object under observation. The two microscopes that are able to produce a three- dimensional image of the object are scanning tunnel microscope and transmission electron microscope. In scanning tunnel microscope images are produced of objects at the atomic level. A transmission electron microscope helps to visualize and object with the help of an electron beam.

Considering the other given options:
Option A) A scanning electron microscope produces only a two- dimensional image of the object with the help of an electron beam. Thus A is not the right option.
Option B) A scanning electron microscope produces only a two- dimensional image of the object with the help of an electron beam. Thus B is not the right option.
Option D) Compound light microscope is one of the oldest discovered microscopes and does not help in producing a three- dimensional image of the object. Thus it is not the right option.

Therefore from the above given options, the most appropriate option is C. That is, scanning tunnelling microscope and transmission electron microscope generate three- dimensional images.

Note: The first device resembling a microscope was perfected by Galileo Galilei in 1609. In 1675 Anton van Leeuwenhoek used a microscope with a single lens to observe insects. The microscopes producing three- dimensional images were discovered in the 1980s.