Question

Which of the following can be used to see atoms?

• A. Scanning tunneling microscope
• B. Compound Microscope
• C. Stereo Microscope
• D. Confocal Microscope

Answer 1

The correct option is A

Scanning tunneling microscope

The correct option is A.

The explanation for the correct option:

1. Scanning tunneling microscope is based on the special property of atoms known as tunneling.
2. The electrons through tunnels can enter the surface of an element.
3. Hence by this microscope, we can indirectly see atoms.

The explanation for the incorrect options:

Option B:

1. As atoms are really tiny in nature ranging below 1×10-10 m.
2. A compound microscope is a light microscope.
3. Hence it is impossible to atoms through a compound microscope.

Option C:

1. The stereo microscope is referred to the as dissecting microscope.
2. It is used for dissection purposes and has low resolution.
3. Hence, the tiny atoms cannot be seen through a stereo microscope.

Option D:

1. A confocal microscope is used to increase the resolution of micrographs.
2. Hence it also cannot be used for observing atoms.

Final answer: A scanning tunneling microscope can be used to see atoms.