Explain giving reason, how the magnifying power of a compound microscope depends on the (i) wavelength of incident light, and (ii) focal length of the objective lens.
The magnifying power of the compound microscope is given by:
When the final image is formed at near point
When the final image is formed at infinity
where L Tube length
the focal length of the objective lens
the focal length of the eyepiece
and the resolving power of a microscope
From the above equations, it is clear that
(i) the magnifying power of a compound microscope varies inversely with the wavelength of the incident light.
(ii) the magnifying power of a compound microscope is inversely proportional to the focal length of the objective lens.