Question

Microscope is used to observe microscopic objects.
Few microscopes are given, which one of them is used to see the construction of nano-scale?
(P) Optical Microscope
(Q) Atomic Force Microscope
(R) Scanning Tunnelling Microscope

• A. All P, Q, R
• B. Only P and R
• C. Only Q and R
• D. Only P and Q

Answer 1

The correct option is C Only Q and R

An optical microscope has the resolution of about 0.2 microns whereas an Atomic Force Microscope and Scanning Tunnelling Microscope can have the resolution of up-to 0.01 nano-meter. That is, under the optical microscope we can see bacteria, fungi. Whereas, in Atomic Force Microscope and Scanning Tunnelling Microscope we can view viruses, proteins, chemical bonds and other smaller molecules.