Question

1. Define the term "field of view" as used in microscopy.
2. State two functions of the body tube of a light microscope. 
3. Give a reason why it is not advisable to use water in cleaning a microscope.

Answer 1

1. A circular area seen (on the stage) when focusing/viewing through the eyepiece of a microscope.
2.  
   1. Holds the revolving nose piece/objective lenses in place
   2. Holds the ocular/eyepiece (lens) in place
3.  
   1. To avoid rusting
   2. To avoid interference with visibility of the lens.