How to clean the lens of a microscope?

More Questions

• What is the objective lens on a microscope?
• Why is convex lens called converging lens?
• Why is light microscope called a compound microscope?
• What is concave lens and convex lens?
• Why concave lens is called diverging lens?
• Why should the capillary be cleaned every time before use?
• What is the unit of power of a lens?
• What is white when dirty and black when clean?
• What is focal length of a lens?
• What is radius of curvature of the lens?