Answer:
The lens to be used for the objective is lens A
Explanation:
The objective of a compound microscope
The focal length of the lens used for the objective = 1/(magnification obtained)
The focal length of most modern is equal to the tube length
The range of sizes for the focal length of a microscope is between 2 mm and 40 mm
Therefore, the appropriate lens to be used for the objective of the compound is lens A that has a focal length of 0.50 cm = 5 mm
The answer is vaporization, then condensation.
Here is a set of flash card that can help with this subject.
If its out and has been rained on it will rust if its like metal or iron stuff like that it will rust
the answer is rust
but no so quickly
