Answer the following questions related to the resolving capability of an optical…
PHYSICS · Multi-part · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
Answer the following questions related to the resolving capability of an optical microscope:
(a) Explain how the resolving limit of a microscope depends on the wavelength of light used and on the numerical aperture of the objective.
(b) With the help of this dependence, justify qualitatively why violet light gives a better resolution than red light for the same objective.
(c) Describe how using an immersion medium of higher refractive index enhances the resolving power even when the lens geometry and the illumination wavelength remain unchanged.