The use of oil with certain high-power objective lenses increases
A) magnification.
B) reflection.
C) resolution.
D) contrast.
E) color.

Question

Quizplus · Accepted Answer

Oil immersion is used with high-power objective lenses to increase the resolution of the microscope. When the objective lens is brought very close to the specimen, a tiny gap or air layer exists between the lens and the specimen. This gap can cause the bending or diffraction of light, which reduces the resolution. By using an oil with a refractive index similar to that of the lens and the specimen, the gap is eliminated, and more light is able to pass through the specimen, resulting in higher resolution.

The Use of Oil with Certain High-Power Objective Lenses Increases