question_answer

How does the resolving power of a compound microscope change, when (i) refractive index of the medium between the object and the objective lens increases ; and (ii) wavelength of the radiation used is increased ?                                          

Answer:

                R.P. of a compound microscope \[=\frac{2\mu \sin \theta }{\lambda }\] (i) When the refractive index \[(\mu )\] of the medium between the object and the objective lens increases, the resolving power increases. (ii) When the wavelength \[(\lambda )\] of the radiation used is increased, the resolving power decreases.