1.

The use of oil immersion canA. increase the value of refractive indexB. decrease the value of refractive indexC. increase the value of numerical apertureD. decrease the value of numerical aperture

Answer» Correct Answer - C
Oil immersion is a technique used to increase the resolution of a microscope by immersing objective lens and the speciemen in a transparent oil of high refractive index, thus increasing numerical aperture, e.g. cedar wood oil.


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