Answer to Question 1
ANS: A
Resolution is the ability to distinguish between two objects that are situated closely together as two distinct entities. Contrast makes an image sharper (i.e., clearer), but does not affect resolution. If lenses are parfocal, then moving from one objective to another will require only minor adjustments in the fine focus. If they are parcentric, then an object in the center of one field using one lens will be close to the center when another objective is moved into position.
Answer to Question 2
ANS: A
A commercial glass cleaning solution is best used for cleaning lenses. Water will often only smudge anything present, especially on an oil immersion lens. Benzene and xylol are solvents that are carcinogenic and should not be used.
A close-up of the migrating snails.
An example of color blindness test. A person with red-green color blindness would not be able to dis
Bonobos are close relatives of chimpanzees and of humans.
Medical assistant shaking hands with the interviewer at the close of the interview.
Western blot. In the first step, (1) a polyacrylamide gel electrophoresis is performed to separate ...
Research that has examined babies' ability to recognize themselves develops in the 2 year